Radio system using nodes with high gain antennas

• US 10,085,200 B1
• Filed: 09/29/2017
• Issued: 09/25/2018
• Est. Priority Date: 09/29/2017
• Status: Active Grant

• Current Assignee: Star Mesh LLC
• Original Assignee: Star Mesh LLC
• Inventors: Schloemer, Gerald R.
• Primary Examiner(s): Zaidi, Iqbal
• Application Number:
  US15/719,611
• Time in Patent Office: 361 Days
• Field of Search: 370252-316, 455430, 455 133, 379252-316
• CPC Class Codes: H01Q 1/288 Satellite antennas
• CPC Class Codes: H01Q 15/14 Reflecting surfaces; Equivalent structures electromagnetic shields H01Q1/526
• CPC Class Codes: H04B 7/18513 Transmission in a satellite or space-based system
• CPC Class Codes: H04B 7/18515 Transmission equipment in satellites or space-based relays
• CPC Class Codes: H04B 7/18519 Operations control, administration or maintenance
• CPC Class Codes: H04L 43/0847 Transmission error
• CPC Class Codes: H04L 43/18 Protocol analysers
• CPC Class Codes: H04L 45/54 Organization of routing tables
• CPC Class Codes: H04W 16/28 using beam steering
• CPC Class Codes: H04W 40/12 based on transmission quality or channel quality
• CPC Class Codes: H04W 40/24 Connectivity information management, e.g. connectivity discovery or connectivity update

Abstract

A radio communication route enables communication from an originating ground station to a destination ground station via one of multiple randomly orbiting satellites with no active attitude control. The ground stations and satellites include multi-feed parabolic antennas for receiving radio signals from and transmitting radio signals in multiple directions. The satellites store an address of a destination ground station from which an initial information signal is transmitted and antenna information identifying the satellite antenna feed on which the initial information signal was received. Plural satellite antennas transmit linking information identifying the satellite to the originating ground station. Data transmissions received at the originating ground station that designate a particular destination are transmitted by the originating ground station using the antenna on which the linking information was received and the satellite retransmits the data transmission using the satellite antenna feed identified by the stored antenna information.

Claims

1. A method for creating a radio communication route for data communications to a sending ground station from a receiving ground station different from the sending ground station, wherein the ground stations include a plurality of ground station directional antennas for transmitting and receiving radio signals, the method comprising:

(a) providing multiple satellites orbiting the earth, wherein each of a plurality of the satellites includes a plurality of satellite antennas and each of multiple antennas of the plurality of satellite antennas comprises a reflector with a plurality of feeds for transmitting radio signals in a corresponding plurality of directions different from each other and for receiving radio signals in the respective different directions;

(b) receiving on at least one of the multiple antennas of plural receiving satellites an initial information routing signal transmitted from an antenna at a sending ground station;

(c) storing at the plural satellites receiving the initial information routing signal on at least one of the multiple antennas (i) address information identifying the ground station from which the initial information routing signal was received, (ii) the satellite antenna on which the initial information routing signal was received, and (iii) the antenna feed on which the information routing signal was received;

(d) transmitting linking information routing signals from a number of the antennas of each of the plural receiving satellites, wherein the linking information routing signals include (i) linking information identifying each of the plural receiving satellites, and (ii) a quality of the received initial information routing signal indicating a suitability of the satellite and the sending ground station as a radio link in a radio communication route between the ground stations;

(e) storing at a receiving ground station receiving at least one linking information routing signal (i) address information identifying the satellite transmitting the linking information routing signal, (ii) the receiving ground station antenna on which the linking information routing signal was received, and (iii) a quality of the initial information routing signal received at the satellite transmitting the linking information routing signal; and

(f) determining a preferred radio communication route for data communications from the receiving ground station to the sending ground station via a particular satellite based on (i) a quality of the received linking information routing signal indicating a suitability of the receiving ground station and the particular satellite as a radio link in a radio communication route between the ground stations, and (ii) the quality of the initial information routing signal, wherein the routing signals comprise digital data streams and the quality of a received routing signal is expressed as a quantitative figure of merit based at least in part on a property of the digital data stream.

2. A method as in claim 1, wherein the satellites are designated as a first type of node and the ground stations are designated as a second type of node, and each type of node can only communicate with a node of a different type.

3. A method as in claim 2 further including sending a data transmission from the receiving ground station to the sending ground station, wherein the first type of node only transmits radio signals in a first mode and only receives radio signals in a second mode that substantially eliminates interference with transmissions in the first mode, and the second type of node only receives radio signals in the first mode and only transmits radio signals in the second mode.

4. A method as in claim 1, wherein all of the plurality of satellite antennas comprise a reflector with a plurality of feeds for transmitting radio signals in a corresponding plurality of directions different from each other and for receiving radio signals in the respective different directions.

5. A method as in claim 4, wherein respective feeds of each of the multiple satellite antennas are disposed in substantially the same angular orientation relative to the antenna reflector for transmitting radio signals at substantially the same angle relative to an axis of the antenna.

6. A method as in claim 5, wherein each antenna reflector of the multiple satellite antennas has a parabolic cross section and is circular with a diameter at least 4 times the wavelength of the radio signals (γ

) and each feed is spaced from the reflector at least 4 times γ

.

7. A method as in claim 1, wherein the reflector of each of the multiple satellite antennas has a parabolic cross section and includes at least seven feeds, one of which is disposed substantially at the focal point of the parabolic reflector and the remaining feeds are distributed equally around the focal point and spaced radially from the focal point.

8. A method as in claim 1, wherein the multiple satellite antennas are arranged to transmit and receive radio signals over substantially the entire spherical space surrounding each of the satellites.

9. A method as in claim 1 further including communicating a data transmission comprising packets of digital data from an origin comprising a receiving ground station to a destination comprising a sending ground station, each data transmission packet including a header including the address information of the destination and a payload including a data stream representing the content of the transmission, wherein:

the origin transmits the packet of digital data to the particular satellite using the receiving ground station antenna on which the linking information routing signal was received; and

the particular satellite transmits the packet of digital data transmission to the destination using the feed of the antenna of the particular satellite on which the initial information routing signal was received.

10. A method as in claim 1, wherein determining a preferred radio communication route for data communications from the receiving ground station to the sending ground station is performed by the receiving ground station without a central computer communicating with the satellites or other ground stations.

11. A method as in claim 1, further comprising deploying the satellites with a rotational velocity about an axis of rotation.

12. A method as in claim 11, wherein a predetermined plurality of the satellites rotate in a first direction about a rotational axis and a second predetermined plurality rotate in a second direction about a rotational axis.

13. A method as in claim 12, wherein predetermined numbers of the satellites rotate in opposite directions.

14. A method as in claim 11, wherein the satellites occupy random orbits.

15. A method as in claim 14, wherein the satellites orbit the earth without an attitude control mechanism comprising moving parts for changing the angular orientation of the satellites.

16. A method as in claim 14, wherein the satellites tumble as they orbit the earth without regard to the angular orientation of the satellites.

17. A method as in claim 1, wherein the satellites occupy random orbits.

18. A method as in claim 17, wherein the satellites orbit the earth without an attitude control mechanism comprising moving parts for changing the angular orientation of the satellites.

19. A method as in claim 17, wherein the satellites tumble as they orbit the earth without regard to the angular orientation of the satellites.

20. A method as in claim 1, wherein the antenna reflectors and feeds are fixed in position on the satellites.

21. A method as in claim 20, wherein the satellites occupy random orbits.

22. A method as in claim 21, wherein the satellites orbit the earth without an attitude control mechanism comprising moving parts for changing the angular orientation of the satellites.

23. A method for creating a radio communication route for data communications from a receiving ground station to a sending ground station, wherein the ground stations include a plurality of ground station directional antennas for transmitting and receiving radio signals, the method comprising:

(a) providing multiple satellites orbiting the earth, wherein each of a plurality of the satellites includes a plurality of satellite antennas and each of multiple antennas of the plurality of satellite antennas comprises a reflector with a plurality of feeds for transmitting radio signals in a corresponding plurality of directions different from each other and for receiving radio signals in the respective different directions;

(b) receiving on at least one of the multiple antennas of at least one satellite an initial information signal transmitted from an antenna at a sending ground station;

(c) storing at any satellite receiving the initial information signal on at least one of the multiple antennas at least (i) address information identifying the ground station from which the initial information signal was received, (ii) the satellite antenna on which the initial information signal was received, and (iii) the antenna feed on which the information signal was received;

(d) transmitting linking information signals from a number of the antennas of at least one satellite receiving the initial information signal, wherein the linking information signals include (i) linking information identifying the satellite, and (ii) a quality of the received initial information signal indicating a suitability of the satellite and the sending ground station as a radio link in a radio communication route between the ground stations;

(e) storing at a receiving ground station receiving at least one linking information signal (i) address information identifying the satellite transmitting the linking information signal, (ii) the receiving ground station antenna on which the linking information signal was received, and (iii) a quality of the initial information signal received at the satellite transmitting the linking information signal; and

(f) determining a preferred radio communication route for data communications from the receiving ground station to the sending ground station via a particular satellite based on (i) a quality of the received linking information signal indicating a suitability of the receiving ground station and the particular satellite as a radio link in a radio communication route between the ground stations, and (ii) the quality of the initial information signal, wherein;

the satellites are designated as a first type of node and the ground stations are designated as a second type of node, and each type of node can only communicate with a node of a different type, and

the method further includes sending a data transmission from the receiving ground station to the sending ground station, wherein the first type of node only transmits radio signals in a first mode and only receives radio signals in a second mode that substantially eliminates interference with transmissions in the first mode, and the second type of node only receives radio signals in the first mode and only transmits radio signals in the second mode.

24. A method as in claim 23, wherein:

all of the plurality of satellite antennas comprise a reflector with a plurality of feeds for transmitting radio signals in a corresponding plurality of directions different from each other and for receiving radio signals in the respective different directions; and

respective feeds of each of the multiple satellite antennas are disposed in substantially the same angular orientation relative to the antenna reflector for transmitting radio signals at substantially the same angle relative to an axis of the antenna.

25. A method as in claim 24, wherein each antenna reflector of the multiple satellite antennas has a parabolic cross section and is circular with a diameter at least 4 times the wavelength of the radio signals (γ

) and each feed is spaced from the reflector at least 4 times γ

.

26. A method as in claim 23, wherein the reflector of each of the multiple satellite antennas has a parabolic cross section and includes at least seven feeds, one of which is disposed substantially at the focal point of the parabolic reflector and the remaining feeds are distributed equally around the focal point and spaced radially from the focal point.

27. A method as in claim 23, wherein the multiple satellite antennas are arranged to transmit and receive radio signals over substantially the entire spherical space surrounding each of the satellites.

28. A method as in claim 23, wherein determining a preferred radio communication route for data communications from the receiving ground station to the sending ground station is performed by the receiving ground station without a central computer communicating with the satellites or other ground stations.

29. A method as in claim 23, wherein the satellites occupy random orbits.

30. A method as in claim 29, wherein the satellites orbit the earth without an attitude control mechanism comprising moving parts for changing the angular orientation of the satellites.

31. A method as in claim 23, wherein the satellites orbit the earth without an attitude control mechanism comprising moving parts for changing the angular orientation of the satellites.

32. A method as in claim 23, wherein the satellites tumble as they orbit the earth without regard to the angular orientation of the satellites.

33. A method as in claim 23, wherein the antenna reflectors and feeds are fixed in position on the satellites.

34. A method for creating a radio communication route for data communications from a receiving ground station to a sending ground station, wherein the ground stations include a plurality of ground station directional antennas for transmitting and receiving radio signals, the method comprising:

(a) providing multiple satellites orbiting the earth, wherein each of a plurality of the satellites includes a plurality of satellite antennas and each of multiple antennas of the plurality of satellite antennas comprises a reflector with a plurality of feeds for transmitting radio signals in a corresponding plurality of directions different from each other and for receiving radio signals in the respective different directions;

(b) receiving on at least one of the multiple antennas of at least one satellite an initial information signal transmitted from an antenna at a sending ground station;

(c) storing at any satellite receiving the initial information signal on at least one of the multiple antennas at least (i) address information identifying the ground station from which the initial information signal was received, (ii) the satellite antenna on which the initial information signal was received, and (iii) the antenna feed on which the information signal was received;

(d) transmitting linking information signals from a number of the antennas of at least one satellite receiving the initial information signal, wherein the linking information signals include (i) linking information identifying the satellite, and (ii) a quality of the received initial information signal indicating a suitability of the satellite and the sending ground station as a radio link in a radio communication route between the ground stations;

(e) storing at a receiving ground station receiving at least one linking information signal (l) address information identifying the satellite transmitting the linking information signal, (ii) the receiving ground station antenna on which the linking information signal was received, and (iii) a quality of the initial information signal received at the satellite transmitting the linking information signal; and

(f) determining a preferred radio communication route for data communications from the receiving ground station to the sending ground station via a particular satellite based on (i) a quality of the received linking information signal indicating a suitability of the receiving ground station and the particular satellite as a radio link in a radio communication route between the ground stations, and (ii) the quality of the initial information signal,

the method further including communicating a data transmission comprising packets of digital data from an origin comprising a receiving ground station to a destination comprising a sending ground station, each data transmission packet including a header including the address information of the destination and a payload including a data stream representing the content of the transmission, wherein (1) the origin transmits the packet of digital data to the particular satellite using the receiving ground station antenna on which the linking information signal was received, and (ii) the particular satellite transmits the packet of digital data transmission to the destination using the feed of the antenna of the particular satellite on which the initial information signal was received.

35. A method as in claim 34, wherein:

all of the plurality of satellite antennas comprise a reflector with a plurality of feeds for transmitting radio signals in a corresponding plurality of directions different from each other and for receiving radio signals in the respective different directions; and

respective feeds of each of the multiple satellite antennas are disposed in substantially the same angular orientation relative to the antenna reflector for transmitting radio signals at substantially the same angle relative to an axis of the antenna.

36. A method as in claim 35, wherein each antenna reflector of the multiple satellite antennas has a parabolic cross section and is circular with a diameter at least 4 times the wavelength of the radio signals (γ

) and each feed is spaced from the reflector at least 4 times γ

.

37. A method as in claim 34, wherein the reflector of each of the multiple satellite antennas has a parabolic cross section and includes at least seven feeds, one of which is disposed substantially at the focal point of the parabolic reflector and the remaining feeds are distributed equally around the focal point and spaced radially from the focal point.

38. A method as in claim 34, wherein the multiple satellite antennas are arranged to transmit and receive radio signals over substantially the entire spherical space surrounding each of the satellites.

39. A method as in claim 34, wherein determining a preferred radio communication route for data communications from the receiving ground station to the sending ground station is performed by the receiving ground station without a central computer communicating with the satellites or other ground stations.

40. A method as in claim 34, wherein the satellites occupy random orbits.

41. A method as in claim 40, wherein the satellites orbit the earth without an attitude control mechanism comprising moving parts for changing the angular orientation of the satellites.

42. A method as in claim 34, wherein the satellites orbit the earth without an attitude control mechanism comprising moving parts for changing the angular orientation of the satellites.

43. A method as in claim 34, wherein the satellites tumble as they orbit the earth without regard to the angular orientation of the satellites.

44. A method as in claim 34, wherein the antenna reflectors and feeds are fixed in position on the satellites.