Mixed reuse of feeder link and user link bandwidth

• US 7,525,934 B2
• Filed: 09/13/2004
• Issued: 04/28/2009
• Est. Priority Date: 09/24/2003
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Ames, William G., Schiff, Leonard Norman
• Primary Examiner(s): Lee; Andrew
• Application Number:
  US10/940,356
• Publication Number:
  US 20050118947A1
• Time in Patent Office: 1,688 Days
• Field of Search: 370/316, 370/319
• US Class Current: 370/319
• CPC Class Codes: H04B 7/18515 Transmission equipment in satellites or space-based relays

Abstract

An apparatus and method for a wireless communication system in which a forward/uplink portion and a return/uplink portion are assigned within an available frequency bandwidth is disclosed. More particularly, a service area is divided into multiple regions. The assignment of the forward/uplink portion of the return/uplink portion is shuffled in the multiple regions. The apparatus and method may be implemented in a multi-beam wireless communication system.

Claims

1. A method for transmitting forward/uplink and return/uplink signals within an available frequency bandwidth in a wireless communication system comprising:

dividing a service area into multiple regions; and

determining a minimum number of layouts required to service the multiple regions, where each layout comprises a unique pattern of forward/uplink and return/uplink signals, the layout patterns being constructed such that any layout will not interfere with the forward/uplink and return/uplink signals of different layout pattern employed in an adjacent region, and

dividing the available frequency bandwidth into a number of required portions facilitating creation of the series of unique pattern layouts and assigning forward/uplink and return/uplink signals in accordance with each layout where the portion of forward/uplink plus the portion of return/uplink is less than or equal to the available frequency bandwidth.

2. The method of claim 1, further comprising:

assigning a layout to one or more regions in such a manner of mitigating interference between any adjacent layouts.

3. The method of claim 1, wherein the wireless communication system is a multi-beam communication system.

4. The method of claim 1, further compnsing:

determining the portions of the available frequency band to assign to the forward/uplink and the return/uplink is based upon at least one of type of signals being used, capacity of signals being used, geographical regions to be covered, number of terminals to be serviced, power available, or power requirements of the forward/uplink and the return/uplink, providing efficient utilization of the allocated frequency bandwidth.

5. Apparatus for a wireless communication system in which a forward/uplink portion and a return/uplink portion are assigned within an available frequency bandwidth, the apparatus comprising:

means for dividing a service area into multiple regions;

means for determining a minimum number of layouts required to service the multiple regions, where each layout comprises a unique pattern of forward/uplink and return/uplink signals, and the layout patterns being constructed such that any layout will not interfere with the forward/uplink and return/uplink signals of different layout pattern employed in an adjacent region; and

means for dividing the available frequency bandwidth into a number of required portions facilitating creation of the series of unique pattern layouts and assigning forward/uplink and return/uplink signals in accordance with each layout where the portion of forward/uplink plus the portion of return/uplink is less than or equal to the available frequency bandwidth.

6. The method of claim 5, further comprising:

means for assigning a layout to one or more regions in such a manner of mitigating interference between any adjacent layouts.

7. A method for receiving uplink transmission in which forward/uplink and return/uplink are assigned within an available frequency range compnsing:

dividing a service area into multiple regions; and

receiving the forward/uplink and the return/uplink signals in a mixed mode layout of the available frequency bandwidth, the mixed mode layout is one in a series of layouts and comprises a unique pattern of forward/uplink and return/uplink signals formed by dividing the available frequency bandwidth into a number of required portions facilitating creation of a series of unique pattern layouts, and the layout patterns being constructed such that any layout will not interfere with the forward/uplink and return/uplink signals of different layout pattern employed in an adjacent region.

8. Apparatus for receiving uplink transmission in which forward/uplink and return/uplink are assigned within an available frequency range, comprising:

means for dividing a service area into multiple regions; and

means for receiving the forward/uplink and the return/uplink signals in a mixed mode layout of the available frequency bandwidth, the mixed mode layout is one in a series of layouts and comprises a unique pattern of forward/uplink and return/uplink signals formed by dividing the available frequency bandwidth into a number of required portions facilitating creation of a series of unique pattern layouts, and the layout patterns being constructed such that any layout will not interfere with the forward/uplink and return/uplink signals of different layout pattern employed in an adjacent region.

9. A method for uplink transmission in which forward/uplink portion is assigned within an available frequency range, the method comprising:

dividing a service area into multiple regions;

determining a minimum number of layouts required to service the multiple regions, where each layout comprises a unique pattern of forward/uplink and return/uplink signals, and the layout patterns being constructed such that any layout will not interfere with the forward/uplink and return/uplink signals of different layout pattern employed in an adjacent region; and

dividing the available frequency bandwidth into a number of required portions facilitating creation of the series of unique pattern layouts and assigning forward/uplink and return/uplink signals in accordance with each layout where the portion of forward/uplink plus the portion of return/uplink is less than or equal to the available frequency bandwidth.

10. The method of claim 9, further comprising:

assigning a layout to one or more regions in such a manner of mitigating interference between any adjacent layouts.

11. The method of claim 10, further comprising:

transmitting the forward/uplink signals in a region using the layout assigned to that region.

12. Apparatus for uplink transmission in which forward/uplink portion is assigned within an available frequency range, comprising:

means for dividing a service area into multiple regions;

means for determining a minimum number of layouts required to service the multiple regions, where each layout comprises a unique pattern of forward/uplink and return/uplink signals, and the layout patterns being constructed such that any layout will not interfere with the forward/uplink and return/uplink signals of different layout pattern employed in an adjacent region, and

means for dividing the available frequency bandwidth into a number of required portions facilitating creation of the series of unique pattern layouts and assigning forward/uplink and return/uplink signals in accordance with each layout where the portion of forward/uplink plus the portion of return/uplink is less than or equal to the available frequency bandwidth.

13. The apparatus of claim 12, further comprising:

means for assigning a layout to one or more regions in such a manner of mitigating interference between any adjacent layouts.

14. The apparatus of claim 13, further comprising:

means for transmitting the forward/uplink signals in a region using the layout assigned to that region.

15. A method for uplink transmission in which return/uplink portion is assigned within an available frequency range, the method comprising:

dividing a service area into multiple regions;

determining a minimum number of layouts required to service the multiple regions, where each layout comprises a unique pattern of forward/uplink and return/uplink signals, and the layout patterns being constructed such that any layout will not interfere with the forward/uplink and return/uplink signals of different layout pattern employed in an adjacent region; and

dividing the available frequency bandwidth into a number of required portions facilitating creation of the series of unique pattern layouts and assigning forward/uplink and return/uplink signals in accordance with each layout where the portion of forward/uplink plus the portion of return/uplink is less than or equal to the available frequency bandwidth.

16. The method of claim 15, further comprising:

assigning a layout to one or more regions in such a manner of mitigating interference between any adjacent layouts.

17. The method of claim 16, further comprising:

transmitting the return/uplink signals in a region using the layout assigned to that region.

18. Apparatus for uplink transmission in which return/uplink portion is assigned within an available frequency range, comprising:

means for dividing a service area into multiple regions;

means for determining a minimum number of layouts required to service the multiple regions, where each layout comprises a unique pattern of forward/uplink and return/uplink signals, and the layout patterns being constructed such that any layout will not interfere with the forward/uplink and return/uplink signals of different layout pattern employed in an adjacent region; and

means for dividing the available frequency bandwidth into a number of required portions facilitating creation of the series of unique pattern layouts and assigning forward/uplink and return/uplink signals in accordance with each layout where the portion of forward/uplink plus the portion of return/uplink is less than or equal to the available frequency bandwidth.

19. The apparatus of claim 18, further comprising:

means for assigning a layout to one or more regions in such a manner of mitigating interference between any adjacent layouts.

20. The apparatus of claim 19, further comprising:

means for transmitting the return/uplink signals in a region using the layout assigned to that region.