APPARATUS AND METHOD FOR HYBRID AUTOMATIC REPEAT REQUEST

• US 20070211660A1
• Filed: 02/01/2007
• Published: 09/13/2007
• Est. Priority Date: 02/02/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Teague, Edward
• Granted Patent: US 8,634,353 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 1/1812 Hybrid protocols; Hybrid automatic repeat request [HARQ]
• CPC Class Codes: H04L 1/1854 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04W 72/563 of the wireless resources

Abstract

Systems and methodologies are described that facilitate using both synchronous and asynchronous HARQ assignment schemes. According to various aspects, the system and methods are described for determining if a synchronous HARQ or an asynchronous HARQ assignment scheme should be used for providing a resource assignment and indicating whether the resource assignment is provided using the synchronous HARQ or an asynchronous HARQ assignment scheme.

Claims

1. A method of using HARQ assignment, comprising:

determining if a synchronous HARQ or an asynchronous HARQ assignment scheme should be used for providing a resource assignment; and

indicating whether the resource assignment is provided using the synchronous HARQ or an asynchronous HARQ assignment scheme.

2. The method of claim 1, wherein the indicating comprises setting an indicator that is signaled to a receiver.

3. The method of claim 2, wherein the setting of the indicator comprises setting an indicator bit to a “

1”

for asynchronous HARQ assignment and setting the indicator bit to a “

0”

for synchronous HARQ assignment.

4. The method of claim 1, further comprising allocating a frequency range for the HARQ assignment, wherein a first frequency range is allocated for synchronous HARQ assignment scheme and a second frequency range is allocated for asynchronous HARQ assignment scheme.

5. The method of claim 4, wherein the indicating comprises signaling over a broadcast channel the frequency range used for synchronous and asynchronous HARQ assignment scheme.

6. The method of claim 1, wherein the indicating comprises setting a single bit that is signaled to a receiver over a broadcast channel.

7. The method of claim 1, further comprising using the synchronous HARQ assignment if an assignment overhead is greater than a threshold.

8. The method of claim 1, further comprising using the asynchronous HARQ assignment if an assignment overhead is less than a threshold.

9. The method of claim 1, further comprising using the asynchronous HARQ assignment if an assignment overhead is small.

10. The method of claim 1, further comprising using the synchronous HARQ assignment if an assignment overhead is large.

11. The method of claim 1, further comprises using the asynchronous HARQ assignment during a fragment portion of the resource assignment.

12. An apparatus for using HARQ assignment, comprising:

means for determining if a synchronous HARQ or an asynchronous HARQ assignment scheme should be used for providing a resource assignment; and

means for indicating whether the resource assignment is provided using the synchronous HARQ or an asynchronous HARQ assignment scheme.

13. The apparatus of claim 12, wherein the means for indicating comprises means for setting an indicator that is signaled to a receiver.

14. The apparatus of claim 13, wherein the means for setting of the indicator comprises means for setting an indicator bit to a “

1”

for asynchronous HARQ assignment and means for setting the indicator bit to a “

0”

for synchronous HARQ assignment.

15. The method of claim 12, further comprising allocating a frequency range, wherein a first frequency range is allocated for synchronous HARQ assignment scheme and a second frequency range is allocated for asynchronous HARQ assignment scheme.

16. The method of claim 15, wherein the indicting comprises signaling over a broadcast channel the frequency range used for synchronous and asynchronous HARQ assignment scheme.

17. The apparatus of claim 12, wherein the means for indicating comprises means for setting a single bit that is signaled to a receiver over a broadcast channel.

18. The apparatus of claim 12, further comprising means for using the synchronous HARQ assignment if an assignment overhead is greater than a threshold.

19. The apparatus of claim 12, further comprising means for using the asynchronous HARQ assignment if an assignment overhead is less than a threshold.

20. The apparatus of claim 12, further comprising means for using the asynchronous HARQ assignment if an assignment overhead is small.

21. The apparatus of claim 12, further comprising means for using the synchronous HARQ assignment if an assignment overhead is large.

22. The apparatus of claim 12, further comprises using the asynchronous HARQ assignment during a fragment portion of the resource assignment.

23. An apparatus for scheduling HARQ assignment, comprising:

a scheduler configured to determine if a synchronous HARQ or an asynchronous HARQ assignment scheme should be used for providing a resource assignment; and

the scheduler configured to indicate whether the resource assignment is provided using the synchronous HARQ or an asynchronous HARQ assignment scheme.

24. A computer readable medium having stored thereon computer executable instructions for performing the following acts:

determining if a synchronous HARQ or an asynchronous HARQ assignment scheme should be used for providing a resource assignment; and

indicating whether the resource assignment is provided using the synchronous HARQ or an asynchronous HARQ assignment scheme.

25. A method of using HARQ assignment, comprising:

receiving a resource assignment grant; and

determining if the resource assignment uses a synchronous HARQ or an asynchronous HARQ assignment scheme.

26. A receiver for using HARQ assignment, comprising:

processor for receiving a resource assignment grant; and

the processor for determining if the resource assignment uses a synchronous HARQ or an asynchronous HARQ assignment scheme.