SATELLITE COMMUNICATION BANDWIDTH CROSS LAYER ALLOCATION SYSTEM AND RELATED METHODS

• US 20090109895A1
• Filed: 10/26/2007
• Published: 04/30/2009
• Est. Priority Date: 10/26/2007
• Status: Active Grant

• Current Assignee: Harris Corporation (L3Harris Technologies, Inc.)
• Original Assignee: Harris Corporation (L3Harris Technologies, Inc.)
• Inventors: Bradley, David B., Kota, Sastri L.
• Granted Patent: US 7,936,707 B2
• Time in Patent Office: Days
• US Class Current: 370/316
• CPC Class Codes: H04B 7/185 Space-based or airborne stations; Stations for satellite systemsH04B7/204 takes precedence

Abstract

A satellite communications system may include a satellite, a first ground based satellite transceiver, at least one second ground based satellite transceiver, and at least one ground based terminal coupled to the at least one second ground based satellite transceiver and classifying uplink data into different uplink data classifications, determining an uplink data rate, and determining a satellite signal path degradation. The satellite communications system may also include a gateway coupled to the first ground based satellite transceiver and communicating with the at least one ground based terminal via the satellite. The gateway may use cross layer protocol interfacing with the at least one ground based terminal for adaptively changing at least one transmission characteristic based upon the satellite signal path degradation. The satellite may allocate bandwidth based upon the uplink data classification and the uplink data rate.

Claims

1. A satellite communications system comprising:

a satellite;

a first ground based satellite transceiver;

at least one second ground based satellite transceiver;

at least one ground based terminal coupled to said at least one second ground based satellite transceiver and classifying uplink data into different uplink data classifications, determining an uplink data rate, and determining a satellite signal path degradation; and

a gateway coupled to said first ground based satellite transceiver and communicating with said at least one ground based terminal via said satellite, and using cross layer protocol interfacing with said at least one ground based terminal for adaptively changing at least one transmission characteristic based upon the satellite signal path degradation;

said satellite allocating bandwidth to said at least one ground based terminal based upon the uplink data classification and the uplink data rate.

2. The satellite communications system according to claim 1 wherein said at least one ground based terminal comprises a plurality thereof having different priorities;

and wherein said satellite allocates bandwidth further based upon the different priorities of said plurality of ground based terminals.

3. The satellite communications system according to claim 1 wherein said gateway changes the at least one transmission characteristic and said satellite allocates bandwidth further based upon a Quality of Service (QoS) of a given service.

4. The satellite communications system according to claim 1 wherein the different uplink data classifications comprise at least two of a real time class, a variable rate real time class, a variable rate jitter tolerant class, and a jitter tolerant class.

5. The satellite communications system according to claim 1 wherein the at least one transmission characteristic comprises at least one of data coding and data modulation.

6. The satellite communications system according to claim 1 wherein said gateway adaptively changes the at least one transmission characteristic based upon a time period for communication from said at least one ground based terminal to said gateway.

7. The satellite communications system according to claim 1 wherein said at least one ground based terminal uses a physical layer of a communications protocol for determining the satellite path signal degradation.

8. The satellite communications system according to claim 7 wherein said gateway interfaces with said at least one ground based terminal using a Media Access Control (MAC) layer and the physical layer of the communication protocol.

9. The satellite communications system according to claim 1 wherein said at least one ground based terminal selectively assigns allocated bandwidth to the different uplink data classifications.

10. A gateway for a satellite communications system comprising a satellite;

a first ground based satellite transceiver;

at least one second ground based satellite transceiver; and

at least one ground based terminal coupled to the at least one second ground based satellite transceiver and classifying uplink data into different uplink data classifications, determining an uplink data rate, and determining a satellite signal path degradation;

the gateway to be coupled to the first ground based satellite transceiver and to communicate with the at least one ground based terminal via the satellite, the gateway comprising;

a gateway processor communicating with the at least one ground based terminal and using cross layer protocol interfacing therewith for adaptively changing at least one transmission characteristic based upon the satellite signal path degradation in cooperation with the satellite allocating bandwidth based upon the uplink data classification and the uplink data rate.

11. The gateway according to claim 10 wherein the at least one ground based terminal comprises a plurality thereof having different priorities;

and wherein the satellite allocates bandwidth further based upon the different priorities of the plurality of ground based terminals.

12. The gateway according to claim 10 wherein said gateway processor changes the at least one transmission characteristic and the satellite allocates bandwidth further based upon a Quality of Service (QoS) of a given service.

13. The gateway according to claim 10 wherein the different uplink data classifications comprise at least two of a real time class, a variable rate real time class, a variable rate jitter tolerant class, and a jitter tolerant class.

14. The gateway according to claim 10 wherein the at least one transmission characteristic comprises at least one of data coding and data modulation.

15. The gateway according to claim 10 wherein said gateway processor interfaces with said at least one ground based terminal using a Media Access Control (MAC) layer and a physical layer of the communication protocol.

16. A method for operating a satellite communications system comprising a satellite;

a first ground based satellite transceiver;

at least one second ground based satellite transceiver;

at least one ground based terminal coupled to the at least one second ground based satellite transceiver; and

a gateway coupled to the first ground based satellite transceiver and communicating with the at least one ground based terminal via the satellite, the method comprising;

operating the at least one ground based terminal for classifying uplink data into different uplink data classifications, determining an uplink data rate, and determining a satellite signal path degradation;

operating the gateway using cross layer protocol interfacing with the at least one ground based terminal for adaptively changing at least one transmission characteristic based upon the satellite signal path degradation; and

operating the satellite for allocating bandwidth based upon the uplink data classification and the uplink data rate.

17. The method according to claim 16 wherein the at least one ground based terminal comprises a plurality thereof having different priorities;

and wherein operating the satellite comprises allocating bandwidth further based upon the different priorities of the plurality of ground based terminals.

18. The method according to claim 16 wherein operating the gateway comprises changing the at least one transmission characteristic further based upon a Quality of Service (QoS) of a given service;

and wherein operating the satellite comprises allocating bandwidth further based upon the QoS of the given service.

19. The method according to claim 16 wherein the different uplink data classifications comprise at least two of a real time class, a variable rate real time class, a variable rate jitter tolerant class, and a jitter tolerant class.

20. The method according to claim 16 wherein the at least one transmission characteristic comprises at least one of data coding and data modulation;

and wherein operating the gateway comprises adaptively changing the at least one transmission characteristic based upon a time period for communication from the at least one ground based terminal to the gateway.

21. The method according to claim 16 wherein operating the at least one ground based terminal comprises using a physical layer of a communications protocol for determining the satellite path signal degradation;

and wherein operating the gateway comprises interfacing with the at least one ground based terminal using a Media Access Control (MAC) layer and the physical layer of the communication protocol.

22. The method according to claim 16 wherein operating the at least one ground based terminal comprises selectively assigning allocated bandwidth to the different uplink data classifications.

23. A gateway for a satellite communications system comprising a satellite;

a first ground based satellite transceiver;

at least one second ground based satellite transceiver; and

at least one ground based terminal coupled to the at least one second ground based satellite transceiver and classifying uplink data into different uplink data classifications, determining an uplink data rate, and determining a satellite signal path degradation, the gateway to be coupled to the first ground based satellite transceiver and to communicate with the at least one ground based terminal via the satellite, the gateway comprising;

gateway circuitry communicating with the at least one ground based terminal and configured for using cross layer protocol interfacing therewith for adaptively changing at least one transmission characteristic based upon the satellite signal path degradation in cooperation with the satellite allocating bandwidth based upon the uplink data classification and the uplink data rate.

24. The gateway according to claim 23 wherein the at least one ground based terminal comprises a plurality thereof having different priorities;

and wherein the satellite allocates bandwidth further based upon the different priorities of the plurality of ground based terminals.

25. The gateway according to claim 23 wherein said gateway circuitry changes the at least one transmission characteristic and the satellite allocates bandwidth further based upon a Quality of Service (QoS) of a given service.