IP Library Granted Patent US 8,135,338
Granted Patent B1
US 8,135,338 · App. 12/344,064 · Granted Mar 13, 2012

Satellite system with enhanced payload capacity

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Quick Facts
Patent No.
US 8,135,338
App. No.
12/344,064
Granted
Mar 13, 2012
Kind
B1
Abstract

High data rata communications services are provided via a satellite system. Data is received from a user at a data rate greater than 30 Mbps over a communications link between the user and a first satellite, where the first satellite is one of a number of satellites within the satellite system; the data is forwarded over a crosslink from the first satellite to at least a second satellite within the satellite system; and the data is forwarded from the second satellite by a feeder link to a gateway located on the earth, said gateway being communicatively coupled to a terrestrial data network. The data is received from the user terminal by an antenna on the first satellite adapted for operation at a frequency associated with the feeder link.

Claims (99)

1. A method for enhancing a payload capacity of a satellite system, the method comprising:

receiving data from a user over a communications link between the user and a first satellite, said first satellite being one of a plurality of satellites within the satellite system;

forwarding said data over a crosslink from the first satellite to at least a second satellite within the satellite system; and

forwarding said data from the second satellite by a first feeder link to a terrestrial gateway, said first feeder link operating within a feeder link frequency band, said gateway being communicatively coupled to a terrestrial data network, wherein

the receiving step comprises receiving data from the user at a data rate greater than 30 Mbps by an antenna on the first satellite, said antenna being configured to:

operate at a frequency within the feeder link frequency band;

receive data from the user when in view of the user; and

complete a second feeder link to the terrestrial gateway when in view of the terrestrial gateway.

2. The method of claim 1 , wherein the data is received at a data rate greater than 100 Mbps.

3. The method of claim 1 , wherein the user is an unmanned aeronautical vehicle (UAV).

4. The method of claim 1 , wherein the user is located at a latitude greater than 75 degrees.

5. The method of claim 1 , wherein forwarding said data from the second satellite to the gateway comprises transiting the data via at least a third satellite in a communications path between the second satellite and the gateway.

6. The method of claim 1 , wherein the satellite system operates in low earth orbit.

7. The method of claim 1 , wherein the feeder link frequency band is within Ka-band.

8. The method of claim 1 wherein each of the feeder link, and the crosslink is bidirectional.

9. The method of claim 1 , wherein receiving data from the user comprises receiving data from a plurality of users at an aggregate data rate greater than 300 Mbps.

10. The method of claim 1 , wherein receiving data from the user comprises receiving data from a plurality of users at an aggregate data rate greater than 1 Gbps.

11. A method for enhancing a payload capacity of a satellite system, the method comprising:

receiving data from a user over a communications link between the user and a first satellite, said first satellite being one of a plurality of satellites within the satellite system;

forwarding said data over a crosslink from the first satellite to at least a second satellite within the satellite system; and

forwarding said data from the second satellite by a first feeder link to a terrestrial gateway, said first feeder operating within a feeder link frequency band, said gateway being communicatively coupled to a terrestrial data network, wherein

the receiving step comprises receiving data from the user at a data rate greater than 30 Mbps by a first antenna on the first satellite, said first antenna being configured to:

operate at a frequency-within the feeder link frequency band;

receive data from the user when in view of the user; and

a second antenna on the first satellite is configured to complete a second feeder link to the gateway when in view of the gateway.

12. A method for enhancing a payload capacity of a satellite system, the method comprising:

receiving data from a user over a communications link between the user and a first satellite, said first satellite being one of a plurality of satellites within the satellite system;

forwarding said data over a crosslink from the first satellite to at least a second satellite within the satellite system; and

forwarding said data from the second satellite by a feeder link to a terrestrial gateway, said gateway being communicatively coupled to a terrestrial data network, wherein

the data is received from the user at a data rate greater than 30 Mbps by an antenna on the first satellite, said antenna being configured to operate at a frequency associated with the feeder link, wherein the user comprises a user terminal with at least one of a transmitter output power less than 50 watts and an aperture size less than 1.3 meters.

13. A method for enhancing a payload capacity of a satellite system, the method comprising:

receiving data from a user over a communications link between the user and a first satellite, said first satellite being one of a plurality of satellites within the satellite system;

forwarding said data over a crosslink from the first satellite to at least a second satellite within the satellite system; and

forwarding said data from the second satellite by a first feeder link to a terrestrial gateway, said gateway being communicatively coupled to a terrestrial data network, wherein

the data is received from the user at a data rate greater than 30 Mbps by an antenna on the first satellite, said antenna being configured to operate at a frequency associated with the feeder link, wherein the satellite system comprises an improvement to a preselected baseline communications capacity of at least one satellite, said baseline communications capacity being preselected with reference to a mission traffic model based on a low data rate user link.

14. The method of claim 13 , wherein the improvement comprises at least one of:

implementing advanced forward error correction techniques such as Low Density Parity Check (LDPC) to improve link performance;

implementing large file size transmissions to improve link performance;

implementing an advanced quality of service technique comprising at least one of gain control, an adaptive resending request control method (ARQ), and rate adaptation to improve link performance;

increasing a size of a crosslink antenna;

increasing a size of a feeder link antenna;

implementing multi-beam feeder link antennas;

adding at least one of an additional crosslink antenna and an additional feeder link antenna;

adding bandwidth to at least one of the crosslink and the feeder link;

implementing a more efficient waveform;

increasing effective isotropically radiated power; and

implementing at least one of an optical cross link and an optical feeder link.

15. The method of claim 13 , wherein the data is received at a data rate greater than 100 Mbps.

16. The method of claim 13 , wherein the user is an unmanned aeronautical vehicle (UAV).

17. The method of claim 13 , wherein the user is located at a latitude greater than 75 degrees.

18. The method of claim 13 , wherein forwarding said data from the second satellite to the gateway comprises transiting the data via at least a third satellite in a communications path between the second satellite and the gateway.

19. The method of claim 13 , wherein the antenna is configured to complete a second feeder link to the gateway when in view of the gateway.

20. The method of claim 13 , wherein the antenna is a first antenna configured to receive data from the user at the frequency associated with the feeder link when in view of the user, and a second antenna on the first satellite is configured to complete the feeder link to the gateway when in view of the gateway.

21. The method of claim 13 , wherein the satellite system operates in low earth orbit.

22. The method of claim 13 , wherein the frequency associated with the feeder link is within Ka-band.

23. The method of claim 13 , wherein each of the feeder link, and crosslink is bidirectional.

24. The method of claim 13 , wherein receiving data from the user comprises receiving data from a plurality of users at an aggregate data rate greater than 300 Mbps.

25. The method of claim 13 , wherein receiving data from the user comprises receiving data from a plurality of users at an aggregate data rate greater than 1 Gbps.

26. A satellite system comprising:

a first satellite for receiving data from a user over a communications link between the user and the first satellite, said first satellite being one of a plurality of satellites within the satellite system and being configured to forward said data over a crosslink from the first satellite to at least a second satellite within the satellite system; and

said second satellite being configured to forward said data from the second satellite by a first feeder link, operating within a feeder link frequency band, to a terrestrial gateway, said gateway being communicatively coupled to a terrestrial data network, wherein

the first satellite receives data from the user at a data rate greater than 30 Mbps by an antenna on the first satellite, said antenna being configured to:

operate at a frequency within the feeder link frequency band;

receive data from the user when in view of the user; and

complete a second feeder link to the terrestrial gateway when in view of the terrestrial gateway.

27. The system of claim 26 , wherein the data is received at a data rate greater than 100 Mbps.

28. The system of claim 26 , wherein forwarding said data from the second satellite to the gateway comprises transiting the data via at least a third satellite in a communications path between the second satellite and the gateway.

29. The system of claim 26 , wherein the satellite system operates in low earth orbit.

30. The system of claim 26 , wherein receiving data from the user comprises receiving data from a plurality of users at an aggregate data rate greater than 300 Mbps.

31. The system of claim 26 , wherein receiving data from the user comprises receiving data from a plurality of users at an aggregate data rate greater than 1 Gbps.

32. A satellite system comprising:

a first satellite for receiving data from a user over a communications link between the user and the first satellite, said first satellite being one of a plurality of satellites within the satellite system and being configured to forward said data over a crosslink from the first satellite to at least a second satellite within the satellite system; and

said second satellite being configured to forward said data from the second satellite by a first feeder link, operating within a feeder link frequency band, to a terrestrial gateway, said gateway being communicatively coupled to a terrestrial data network, wherein

the first satellite receives data from the user at a data rate greater than 30 Mbps by a first antenna on the first satellite, said first antenna being configured to operate at a frequency within the feeder link frequency band and receive data from the user when in view of the user; and

a second antenna on the first satellite is configured to complete a second feeder link to the gateway when in view of the gateway.

33. A satellite system comprising:

a first satellite for receiving data from a user over a communications link between the user and the first satellite, said first satellite being one of a plurality of satellites within the satellite system and being operable to forward said data over a crosslink from the first satellite to at least a second satellite within the satellite system; and

said second satellite being operable to forward said data from the second satellite by a feeder link to a terrestrial gateway, said gateway being communicatively coupled to a terrestrial data network, wherein the data is received from the user at a data rate greater than 30 Mbps by an antenna on the first satellite, said antenna being configured to operate at a frequency associated with the feeder link, wherein the user comprises a user terminal with at least one of a transmitter output power less than 50 watts and an aperture size less than 1.3 meters.

34. A satellite system comprising:

a first satellite for receiving data from a user over a communications link between the user and the first satellite, said first satellite being one of a plurality of satellites within the satellite system and being operable to forward said data over a crosslink from the first satellite to at least a second satellite within the satellite system; and

said second satellite being operable to forward said data from the second satellite by a feeder link to a terrestrial gateway, said gateway being communicatively coupled to a terrestrial data network, wherein the data is received from the user at a data rate greater than 30 Mbps by an antenna on the first satellite, said antenna being configured to operate at a frequency associated with the feeder link, wherein the satellite system comprises an improvement to a preselected baseline communications capacity of at least one satellite, said baseline communications capacity being preselected with reference to a mission traffic model based on a low data rate user link.

35. A satellite within a satellite system wherein:

said satellite is a first satellite configured to receive data from a user over a communications link between the user and the first satellite, said first satellite being one of a plurality of satellites within the satellite system and being configured to forward said data over a crosslink to at least a second satellite within the satellite system;

said second satellite is configured to forward said data from the second satellite by a first feeder link to a gateway, said first feeder link operating within a feeder link frequency band, said gateway being communicatively coupled to a terrestrial data network; and

the data is received from the user by an antenna on the first satellite, said antenna being configured to:

operate at a frequency within the feeder link frequency band;

receive data from the user when in view of the user; and

complete a second feeder link to the terrestrial gateway when in view of the terrestrial gateway.

36. A terrestrial gateway configured to communicate with a satellite system wherein:

a first satellite is configured to receive data from a user over a communications link between the user and the first satellite, said first satellite being one of a plurality of satellites within the satellite system and being configured to forward said data over a crosslink to at least a second satellite within the satellite system;

said second satellite is configured to forward said data from the second satellite by a first feeder link to the gateway, said gateway being communicatively coupled to a terrestrial data network; and

the data is received from the user by an antenna on the first satellite, said antenna being configured to operate at a frequency associated with the feeder link.

37. A user terminal configured to communicate with a satellite system wherein:

a first satellite is configured to receive data from the user terminal over a communications link between the user terminal and the first satellite, said first satellite being one of a plurality of satellites within the satellite system and being configured to forward said data over a crosslink to at least a second satellite within the satellite system;

said second satellite is configured to forward said data from the second satellite by a feeder link to the gateway said first feeder link operating within a feeder link frequency band, said gateway being communicatively coupled to a terrestrial data network; and

the data is received from the user terminal by an antenna on the first satellite, said antenna being configured to:

operate at a frequency within the feeder link frequency band;

receive data from the user when in view of the user; and

complete a second feeder link to the terrestrial gateway when in view of the terrestrial gateway.

Assignments (16)
CHANGE OF NAME Recorded Jan 7, 2026
From: MAXAR SPACE LLC
To: LANTERIS SPACE LLC
Reel/Frame 074270/0351 →
CHANGE OF NAME Recorded Nov 6, 2025
From: MAXAR SPACE LLC
To: LANTERIS SPACE LLC
Reel/Frame 073512/0398 →
CHANGE OF NAME Recorded Jun 5, 2023
From: SPACE SYSTEMS/LORAL, LLC
To: MAXAR SPACE LLC
Reel/Frame 063861/0016 →
RELEASE (REEL 060389/FRAME 0720) Recorded May 12, 2023
From: ROYAL BANK OF CANADA
To: MAXAR INTELLIGENCE INC.; MAXAR SPACE LLC
Reel/Frame 063633/0431 →
INTELLECTUAL PROPERTY SECURITY AGREEMENT Recorded May 5, 2023
From: MAXAR INTELLIGENCE INC. (F/K/A DIGITALGLOBE, INC.); AURORA INSIGHT INC.; MAXAR MISSION SOLUTIONS INC. ((F/K/A RADIANT MISSION SOLUTIONS INC. (F/K/A THE RADIANT GROUP, INC.)); MAXAR SPACE LLC (F/K/A SPACE SYSTEMS/LORAL, LLC); SPATIAL ENERGY, LLC; MAXAR SPACE ROBOTICS LLC ((F/K/A SSL ROBOTICS LLC) (F/K/A MDA US SYSTEMS LLC)); MAXAR TECHNOLOGIES HOLDINGS INC.
To: SIXTH STREET LENDING PARTNERS, AS ADMINISTRATIVE AGENT
Reel/Frame 063660/0138 →
TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENTS AND TRADEMARKS - RELEASE OF REEL/FRAME 044167/0396 Recorded May 4, 2023
From: ROYAL BANK OF CANADA, AS AGENT
To: MAXAR INTELLIGENCE INC.; MAXAR SPACE LLC
Reel/Frame 063543/0001 →
TERMINATION AND RELEASE OF PATENT SECURITY AGREEMENT - RELEASE OF REEL/FRAME 060389/0782 Recorded May 4, 2023
From: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
To: MAXAR INTELLIGENCE INC.; MAXAR SPACE LLC
Reel/Frame 063544/0074 →
TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENTS AND TRADEMARKS - RELEASE OF REEL/FRAME 051258/0720 Recorded May 4, 2023
From: ROYAL BANK OF CANADA, AS AGENT
To: MAXAR INTELLIGENCE INC.; MAXAR SPACE LLC
Reel/Frame 063542/0543 →
RELEASE OF SECURITY INTEREST Recorded Jun 21, 2022
From: WILMINGTON TRUST, NATIONAL ASSOCIATION
To: DIGITALGLOBE, INC.; SPACE SYSTEMS/LORAL, LLC; RADIANT GEOSPATIAL SOLUTIONS LLC
Reel/Frame 060390/0282 →
SECURITY AGREEMENT Recorded Jun 17, 2022
From: MAXAR INTELLIGENCE INC.; MAXAR SPACE LLC
To: WILMINGTON TRUST, NATIONAL ASSOCIATION
Reel/Frame 060389/0782 →
SECURITY AGREEMENT Recorded Jun 16, 2022
From: MAXAR INTELLIGENCE INC.; MAXAR SPACE LLC
To: ROYAL BANK OF CANADA
Reel/Frame 060389/0720 →
PATENT SECURITY AGREEMENT Recorded Sep 23, 2020
From: SPACE SYSTEMS/LORAL, LLC
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT
Reel/Frame 053866/0810 →
SECURITY AGREEMENT (NOTES) Recorded Dec 12, 2019
From: DIGITALGLOBE, INC.; RADIANT GEOSPATIAL SOLUTIONS LLC; SPACE SYSTEMS/LORAL, LLC (F/K/A SPACE SYSTEMS/LORAL INC.)
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, - AS NOTES COLLATERAL AGENT
Reel/Frame 051262/0824 →
AMENDED AND RESTATED U.S. PATENT AND TRADEMARK SECURITY AGREEMENT Recorded Dec 11, 2019
From: SPACE SYSTEMS/LORAL, LLC
To: ROYAL BANK OF CANADA, AS COLLATERAL AGENT
Reel/Frame 051258/0720 →
SECURITY INTEREST Recorded Oct 5, 2017
From: DIGITALGLOBE, INC.; MACDONALD, DETTWILER AND ASSOCIATES LTD.; MACDONALD, DETTWILER AND ASSOCIATES CORPORATION; MACDONALD, DETTWILER AND ASSOCIATES INC.; MDA GEOSPATIAL SERVICES INC.; SPACE SYSTEMS/LORAL, LLC; MDA INFORMATION SYSTEMS LLC
To: ROYAL BANK OF CANADA, AS THE COLLATERAL AGENT
Reel/Frame 044167/0396 →
CHANGE OF NAME Recorded Nov 20, 2012
From: SPACE SYSTEMS/LORAL, INC., A DELAWARE CORPORATION
To: SPACE SYSTEMS/LORAL, LLC, A DELAWARE LIMITED LIABILITY COMPANY
Reel/Frame 029340/0409 →