Geostationary satellite system with satellite clusters having intra-cluster local area networks and inter-cluster wide area network

• US 20040192197A1
• Filed: 05/23/2003
• Published: 09/30/2004
• Est. Priority Date: 04/21/2000
• Status: Abandoned Application

• Current Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Original Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Inventors: Ford, Terry E., Capots, Larry H., Clark, Ronald H.
• Application Number:
  US10/445,727
• Publication Number:
  US 20040192197A1
• Time in Patent Office: Days
• US Class Current: 455/12.1
• CPC Class Codes: H04B 7/195 Non-synchronous stations
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Intra-cluster and inter-cluster satellite network and communication method thereof. A satellite network includes a plurality of satellites disposed in one or a plurality of orbits, and a first wireless network formed between each of the plurality of satellites. The first wireless network includes a communication channel to transmit and receive spatial information between at least two of the plurality of satellites. Additionally, the satellite network includes a second wireless network formed between each of the plurality of satellites. The second wireless network includes a receiver, a routing system, and a transmitter.

Claims

1. A satellite network, the network comprising:

a plurality of satellites disposed in one or a plurality of orbits;

a first wireless network formed between each of the plurality of satellites, the first wireless network comprising a communication channel to transmit and receive spatial information between at least two of the plurality of satellites, each of the plurality of satellites including spatial information indicative of a position and an orientation of the each of the plurality of satellites;

a second wireless network formed between each of the plurality of satellites, the second wireless network comprising

a receiver to receive an information packet including data and routing information at a first satellite, the routing information including at least a destination satellite as a destination of the data;

a routing system to determine a desired route from a plurality of routes to transmit the data from the first satellite to the destination satellite based on at least the spatial information of the plurality of satellites, the plurality of routes corresponding to a plurality of paths respectively, each of the plurality of paths including a plurality of path satellites, each of the plurality of path satellites including the first satellite and the destination satellite or including the first satellite, the destination satellite, and at least one of the other satellites of the plurality of satellites;

a transmitter to transmit the data based upon the desired route and the spatial information of the plurality of path satellites of the desired route, whereupon the spatial information of the plurality of path satellites of the desired route provides for transferring the data from the first satellite to the destination satellite.

2. The satellite network of claim 1, the routing system is further configured to update the spatial information of the plurality of satellites and update the desired route based on at least the updated location information of the plurality of satellites.

3. The satellite network of claim 2, wherein the updated desired route and the pre-update desired route are the same route.

4. The satellite network of claim 2, wherein the updated desired route is different from the pre-update desired route.

5. The satellite network of claim 2, wherein the transmitter is further configured to transmit the data based upon the updated desired route and the updated spatial information of the plurality of path satellites of the updated desired route, whereupon the updated spatial information of the plurality of path satellites of the updated desired route provides for transferring the data from the first satellite to the destination satellite.

6. The satellite network of claim 1, the first wireless network and the second wireless network form a single wireless network.

7. The satellite network of claim 1, wherein the desired route is determined in response to at least one of a priority of the data, a route cost, a route distance, a route availability, and a route traffic load.

8. The satellites network of claim 7, wherein the desired route is determined in response to at least the priority of the data.

9. The satellite network of claim 1, wherein the plurality of satellites serve as a plurality of base stations respectively for the first wireless network and the second wireless network respectively, each of the plurality of the satellites is capable of sending the data to more than one of the plurality of the satellites in response to the desired route.

10. The satellite network of claim 9, wherein the plurality of satellites serve as a plurality of users of the first wireless network and the second wireless network respectively.

11. The satellite network of claim 9, wherein the plurality of base stations move with respect to each other.

12. The satellite network of claim 11, wherein the plurality of base stations move with respect to each other in at least one of position and orientation.

13. The satellite network of claim 12, wherein the plurality of base stations move with respect to each other in orientation by rotation.

14. The satellite network of claim 1, wherein the data are free from a limitation of a standard message.

15. The satellite network of claim 14, wherein the standard message is at least one of time, position, or velocity.

16. The satellite network of claim 1, wherein the second wireless network is free from broadcasting the data to the plurality of satellites.

17. The satellite network of claim 16, wherein the first wireless network is free from broadcasting the spatial information to the plurality of satellites.

18. The satellite network of claim 1, wherein the second wireless network is capable of transmitting and receiving the data at a rate equal to or higher than 1 gigabits per second.

19. The satellite network of claim 18, wherein the second wireless network is capable of transmitting and receiving the communication signal directly between two of the plurality of satellites, the two of the plurality of satellites having a communication distance equal to or larger than 100 kilometers.

20. The satellite network of claim 19, wherein the rate is equal to or higher than 4 gigabits per second.

21. The satellite network of claim 20, wherein the communication distance is equal to or larger than 64 kilometers.

22. The satellite network of claim 21, wherein the communication distance is equal to 200 kilometers.

23. A satellite network, the network comprising:

a plurality of satellites disposed in a single slot of a geostationary orbit;

a wireless local area network formed between each of the plurality of satellites, the wireless local area network comprising;

a communication channel to transmit and receive spatial information between at least two of the plurality of satellites, the spatial information indicative of a position and an orientation of the each of the plurality of satellites;

a receiver to receive a communication signal including data and routing information at a first satellite, the routing information including at least a destination satellite as a destination of the data;

a routing system to determine a desired route from a plurality of routes to transmit the data from the first satellite to the destination satellite, each of the plurality of routes corresponding to a plurality of path satellites, each of the plurality of path satellites including the first satellite and the destination satellite or including the first satellite, the destination satellite, and at least one of the other satellites of the plurality of satellites;

a transmitter to transmit the data based upon the desired route and the spatial information of the plurality of path satellites of the desired route.

24. The satellite network of claim 23, wherein the wireless local area network is capable of transmitting and receiving the communication signal at a data rate equal to or higher than 4 gigabits per second.

25. The satellite network of claim 24, wherein the wireless local network is capable of transmitting and receiving the communication signal directly between two of the plurality of satellites, the two of the plurality of satellites having a communication distance equal to or larger than 64 kilometers.

26. The satellite network of claim 25, wherein the communication distance is equal to 200 kilometers.

27. The satellite network of claim 23, wherein the plurality of satellites comprises a utility satellite and at least one communication satellite;

wherein

the utility satellite receives command data from a ground terminal and transmits the command data to the at least one communications satellite, the utility satellite including a power generator and power distribution circuitry transmitting power to the at least one communications satellite;

the at least one communication satellite includes an antenna operable to receive the communication signal from a ground terminal, radio-frequency receiving circuitry operable to process the communication signal and decode the communication signal to form communications traffic data, and a data processor operable to select another satellite from the plurality of satellites as a destination for the communications traffic data, and local-area network circuitry operable to transmit the communications traffic data to the selected another satellite.

28. The satellite network of claim 23, wherein the plurality of satellites comprises at least one remote sensing satellite, the at least one remote sensing satellite including:

a sensor operable to remotely sense a physical phenomenon and output a signal representing the physical phenomenon;

processing circuitry operable to process the signal output from the sensor to form sensor data;

a data processor operable to select another satellite from the plurality of satellites as a destination for the sensor data; and

local-area network circuitry operable to transmit the sensor data to the selected another satellite.

29. The satellite network system of claim 28, wherein the selected another satellite is operable to transmit the sensor data to a satellite cluster or to a ground terminal, the satellite cluster being free from the plurality of satellites.

30. The satellite network system of claim 23, wherein the plurality of satellites comprises at least one scientific satellite, the at least one scientific satellite including:

an experiment operable to output a signal representing results of a scientific experiment;

processing circuitry operable to process the signal output from the experiment to form result data;

a data processor operable to select another satellite from the plurality of satellites as a destination for the result data; and

local-area network circuitry operable to transmit the result data to a selected satellite of the plurality of satellites.

31. The satellite networking system of claim 30, wherein the selected satellite is operable to transmit the result data to a satellite cluster or to a ground terminal, the satellite cluster being free from the plurality of satellites.

32. A satellite network, the network comprising:

a plurality of satellites clusters, each of the plurality of satellite clusters disposed in a different geostationary orbital slot;

a wireless wide area network formed between each of the plurality of satellite clusters, the wireless wide area network comprising;

a communication channel to transmit and receive spatial information between at least two of the plurality of satellite clusters, the spatial information indicative of a position and an orientation of the each of the plurality of satellite clusters;

a receiver to receive a communication signal including data and routing information at a first satellite cluster, the routing information including at least a destination satellite cluster as a destination of the data;

a routing system to determine a desired route from a plurality of routes to transmit the data from the first satellite cluster to the destination satellite cluster, each of the plurality of routes corresponding to a plurality of path satellite cluster, each of the plurality of path satellite cluster including the first satellite cluster and the destination satellite cluster or including the first satellite cluster, the destination satellite cluster, and at least one of the other satellite cluster of the plurality of satellite cluster;

a transmitter to transmit the data based upon the desired route and the spatial information of the plurality of path satellite clusters of the desired route.

33. The satellite network of claim 32, wherein at least one of the plurality of satellite clusters routes a communication signal through a desired route towards to a final destination of the communication signal.

34. The satellite network system of claim 32, wherein the wireless wide area network is capable of transmitting and receiving the communication signal at a date rate equal to or higher than 1 gigabits per second.

35. The satellite network system of claim 33, wherein the communication distance is equal to or larger than 100 km.

36. The satellite network of claim 32, wherein at least one of the plurality of satellite clusters comprises an inter-cluster router satellite including an inter-cluster router.

37. The satellite network of claim 36, wherein the inter-cluster router satellite is a base station of the wireless wide area network and connected to a wireless local area network of a satellite cluster of the plurality of satellite clusters, the satellite cluster including the inter-cluster router satellite, the wireless local area network free from the inter-cluster router satellite as a base station.

38. The satellite network of claim 36, wherein the inter-cluster router satellite is a base station of the wireless wide area network and a base station of a wireless local area network of a satellite cluster of the plurality of satellite clusters, the satellite cluster including the inter-cluster router satellite.

39. The satellite network of claim 32, wherein the plurality of satellites comprises a utility satellite and at least one communications satellite, the utility satellite operable to receive command data from a ground terminal and transmit the command data to the plurality of satellites, the at least one communications satellite including an antenna operable to receive the communications signal from a ground terminal, radio-frequency receiving circuitry operable to process the communication signal and decode the communication signal to form communications traffic data, a data processor operable to select another satellite from the plurality of satellites as a destination for the communications traffic data, and local-area network circuitry operable to transmit the communications traffic data to the selected another satellite.

40. A method for satellite communication, the method comprising:

disposing a plurality of satellites in one or a plurality of orbits;

transmitting and receiving spatial information between at least two of the plurality of satellites, each of the plurality of satellites including spatial information indicative of a position and an orientation of the each of the plurality of satellites;

receiving an information packet including data and routing information at a first satellite, the routing information including at least a destination satellite as a destination of the data;

determining a desired route from a plurality of routes to transmit the data from the first satellite to the destination satellite based on at least the spatial information of the plurality of satellites, the plurality of routes corresponding to a plurality of paths respectively, each of the plurality of paths including a plurality of path satellites, each of the plurality of path satellites including the first satellite and the destination satellite or including the first satellite, the destination satellite, and at least one of the other satellites of the plurality of satellites;

transmitting the data based upon the desired route and the spatial information of the plurality of path satellites of the desired route, whereupon the spatial information of the plurality of path satellites of the desired route provides for transferring the data from the first satellite to the destination satellite.