RESOURCE REQUESTS FOR A WIRELESS COMMUNICATION SYSTEM

• US 20080186931A1
• Filed: 01/29/2008
• Published: 08/07/2008
• Est. Priority Date: 01/30/2007
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Gorokhov, Alexei, Das, Arnab, Ulupinar, Fatih, Prakash, Rajat, Borran, Mohammad Jaber
• Granted Patent: US 8,743,774 B2
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04W 28/24 Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 74/0866 using a dedicated channel for access

Abstract

Techniques for sending resource requests in a wireless communication system are described. Multiple types of quality of service (QoS) information may be supported for resource requests and may include QoS class and latency deadline. A terminal may have data to send on the reverse link and may determine QoS information for the data. The QoS information may include at least one QoS type, which may be dependent on a configuration selected for use to send resource requests. The terminal may also determine backlog level information indicative of the amount of data to send. The terminal may generate a resource request with the backlog level and QoS information. The resource request may include the backlog level information and QoS class information, the backlog level information and either QoS class information or latency deadline information, the backlog level information and latency deadline information, or some other combination of information.

Claims

1. An apparatus for wireless communication, comprising:

at least one processor configured to determine quality of service (QoS) information for data to send, the QoS information comprising at least one of multiple possible QoS types, and to generate a resource request comprising the QoS information; and

a memory coupled to the at least one processor.

2. The apparatus of claim 1, wherein the multiple possible QoS types comprise QoS class and latency deadline.

3. The apparatus of claim 1, wherein the at least one processor is configured to determine the at least one QoS type to send in the resource request based on a configuration selected from among multiple configurations, each configuration being associated with one or more of the multiple possible QoS types.

4. The apparatus of claim 1, wherein the at least one processor is configured to determine backlog level information for the data to send, and to generate the resource request further comprising the backlog level information.

5. The apparatus of claim 3, wherein the at least one processor is configured to determine one of a plurality of backlog level values based on amount of data to send, the plurality of backlog level values being applicable for all of the multiple configurations, and to generate the resource request further comprising the determined backlog level value.

6. The apparatus of claim 3, wherein the resource request comprises a fixed number of bits for all of the multiple configurations.

7. The apparatus of claim 1, wherein the at least one processor is configured to generate the resource request comprising backlog level information and QoS class information if a first configuration is selected.

8. The apparatus of claim 7, wherein the at least one processor is configured to generate the resource request comprising backlog level information and either QoS class information or latency deadline information if a second configuration is selected.

9. The apparatus of claim 8, wherein the at least one processor is configured to generate the resource request comprising backlog level information and latency deadline information if a third configuration is selected.

10. The apparatus of claim 8, wherein the first configuration is selected for a first number of flows, and wherein the second configuration is selected for a second number of flows less than the first number of flows.

11. The apparatus of claim 8, wherein the QoS information comprises QoS class information, and wherein the resource request comprises one of eight possible QoS class values for the first configuration or one of four possible QoS class values for the second configuration.

12. The apparatus of claim 9, wherein the QoS information comprises latency deadline information, and wherein the resource request comprises one of four possible latency deadline values for the second configuration or one of eight possible latency deadline values for the third configuration.

13. A method for wireless communication, comprising:

determining quality of service (QoS) information for data to send, the QoS information comprising at least one of multiple possible QoS types; and

generating a resource request comprising the QoS information.

14. The method of claim 13, further comprising:

determining backlog level information for the data to send, and

wherein the generating the resource request comprises generating the resource request further comprising the backlog level information.

15. The method of claim 14, wherein the generating the resource request comprises

generating the resource request comprising the backlog level information and QoS class information if a first configuration is selected,

generating the resource request comprising the backlog level information and either QoS class information or latency deadline information if a second configuration is selected, and

generating the resource request comprising the backlog level information and latency deadline information if a third configuration is selected.

16. An apparatus for wireless communication, comprising:

means for determining quality of service (QoS) information for data to send, the QoS information comprising at least one of multiple possible QoS types; and

means for generating a resource request comprising the QoS information.

17. The apparatus of claim 16, further comprising:

means for determining backlog level information for the data to send, and

wherein the means for generating the resource request comprises means for generating the resource request further comprising the backlog level information.

18. The apparatus of claim 17, wherein the means for generating the resource request comprises

means for generating the resource request comprising the backlog level information and QoS class information if a first configuration is selected,

means for generating the resource request comprising the backlog level information and either QoS class information or latency deadline information if a second configuration is selected, and

means for generating the resource request comprising the backlog level information and latency deadline information if a third configuration is selected.

19. A computer program product, comprising:

a computer-readable medium comprising;

code for causing at least one computer to determine quality of service (QoS) information for data to send, the QoS information comprising at least one of multiple possible QoS types; and

code for causing the at least one computer to generate a resource request comprising the QoS information.

20. The computer program product of claim 19, wherein the computer- readable medium further comprises:

code for causing the at least one computer to determine backlog level information for the data to send; and

code for causing the at least one computer to generate the resource request further comprising the backlog level information.

21. An apparatus for wireless communication, comprising:

at least one processor configured to determine at least one type of information to send in a resource request, to determine a format to use for the resource request from among multiple formats based on the at least one type of information to send, and to generate the resource request comprising the at least one type of information in the determined format; and

a memory coupled to the at least one processor.

22. The apparatus of claim 21, wherein the multiple formats comprise a first format for backlog level information and quality of service (QoS) information, and wherein the at least one processor is configured to use the first format if the at least one type of information comprises backlog level information and QoS information.

23. The apparatus of claim 22, wherein the multiple formats further comprise a second format for only backlog level information, and wherein the at least one processor is configured to use the second format if the at least one type of information comprises only backlog level information.

24. The apparatus of claim 23, wherein the at least one processor is configured to use the first format if the resource request is for a specific stream, and to use the second format if the resource request is for multiple streams.

25. The apparatus of claim 23, wherein the at least one processor is configured to use the first format for a stream associated with QoS information, and to use the second format for a stream associated with no QoS information or for multiple streams with varying QoS information.

26. The apparatus of claim 21, wherein the resource request comprises a fixed number of bits for all of the multiple formats.

27. The apparatus of claim 23, wherein the first format corresponds to a first range of values and the second format corresponds to a second range of values for the resource request.

28. The apparatus of claim 23, wherein the resource request comprises six bits, wherein the first format corresponds to a first range from 0 to 47, and wherein the second format corresponds to a second range from 48 to 63.

29. A method for wireless communication, comprising:

determining at least one type of information to send in a resource request;

determining a format to use for the resource request from among multiple formats based on the at least one type of information to send; and

generating the resource request comprising the at least one type of information in the determined format.

30. The method of claim 29, wherein the multiple formats comprise a first format for backlog level information and quality of service (QoS) information, and wherein the determining the format comprises using the first format if the at least one type of information comprises backlog level information and QoS information.

31. The method of claim 30, wherein the multiple formats further comprise a second format for only backlog level information, and wherein the determining the format comprises using the second format if the at least one type of information comprises only backlog level information.

32. The method of claim 30, wherein the generating the resource request comprises determining a value for the resource request within a first range of values for the first format and within a second range of values for the second format.

33. An apparatus for wireless communication, comprising:

at least one processor configured to determine quality of service (QoS) class information or latency deadline information for data to send, to determine backlog level information for the data to send, and to generate a resource request comprising the backlog level information in a first field and the QoS class information or the latency deadline information in a second field; and

a memory coupled to the at least one processor.

34. The apparatus of claim 33, wherein the at least one processor is configured to map the QoS class information to a first range of values for the second field or to map the latency deadline information to a second range of values for the second field.

35. The apparatus of claim 33, wherein the second field comprises three bits, and wherein the at least one processor is configured to map the QoS class information to one of four possible values for the second field or to map the latency deadline information to one of four different possible values for the second field.

36. The apparatus of claim 33, wherein the at least one processor is configured to identify at least one stream to which the data to send belongs, to determine whether the at least one stream is associated with QoS class or latency deadline, to determine the QoS class information for the at least one stream if associated with QoS class, and to determine the latency deadline information for the at least one stream if associated with latency deadline.

37. A method for wireless communication, comprising:

determining quality of service (QoS) class information or latency deadline information for data to send;

determining backlog level information for the data to send; and

generating a resource request comprising the backlog level information in a first field and the QoS class information or the latency deadline information in a second field.

38. The method of claim 37, wherein the generating the resource request comprises mapping the QoS class information to a first range of values for the second field or mapping the latency deadline information to a second range of values for the second field.

39. The method of claim 37, wherein the second field comprises three bits, wherein the generating the resource request comprises mapping the QoS class information to one of four possible values for the second field or mapping the latency deadline information to one of four different possible values for the second field.

40. The method of claim 37, wherein the determining the QoS class information or the latency deadline information comprises

identifying at least one stream to which the data to send belongs,

determining whether the at least one stream is associated with QoS class or latency deadline,

determining the QoS class information for the at least one stream if associated with QoS class, and

determining the latency deadline information for the at least one stream if associated with latency deadline.

41. An apparatus for wireless communication, comprising:

at least one processor configured to determine backlog level information based on amount of data to send and spectral efficiency, and to generate a resource request comprising the backlog level information; and

a memory coupled to the at least one processor.

42. The apparatus of claim 41, wherein the at least one processor is configured to determine the spectral efficiency based on a most recent assignment of resources.

43. The apparatus of claim 41, wherein the at least one processor is configured to select one of multiple backlog level values corresponding to different numbers of bytes scaled by the spectral efficiency, and to generate the resource request comprising the selected backlog level value.

44. The apparatus of claim 41, wherein the at least one processor is configured to select one of multiple backlog level values corresponding to different numbers of bytes scaled by the spectral efficiency if the spectral efficiency is greater than a threshold value, and to select one of multiple backlog level values corresponding to different numbers of bytes if the spectral efficiency is equal to or less than the threshold value.

45. The apparatus of claim 41, wherein the at least one processor is configured to determine number of tiles for each of multiple backlog level values based on the spectral efficiency, and to select one of the multiple backlog level values based on the amount of data to send.

46. A method for wireless communication, comprising:

determining backlog level information based on amount of data to send and spectral efficiency; and

generating a resource request comprising the backlog level information.

47. The method of claim 46, wherein the determining the backlog level information comprises selecting one of multiple backlog level values corresponding to different numbers of bytes scaled by the spectral efficiency, and wherein the generating the resource request comprises generating the resource request comprising the selected backlog level value.

48. The method of claim 46, wherein the determining the backlog level information comprises selecting one of multiple backlog level values corresponding to different numbers of bytes scaled by the spectral efficiency if the spectral efficiency is greater than a threshold value, and selecting one of multiple backlog level values corresponding to different numbers of bytes if the spectral efficiency is equal to or less than the threshold value, and wherein the generating the resource request comprises generating the resource request comprising the selected backlog level value.

49. An apparatus for wireless communication, comprising:

at least one processor configured to send a first control message, to select a first pseudo-random value within a window, to set a backoff timer to the first pseudo-random value upon sending the first control message, and to determine whether to send a second control message based on the backoff timer; and

a memory coupled to the at least one processor.

50. The apparatus of claim 49, wherein the at least one processor is configured to send the second control message if a response is not received for the first control message and the backoff timer expires.

51. The apparatus of claim 50, wherein the at least one processor is configured to increase the window after sending the second control message, to select a second pseudo-random value within the increased window, and to set the backoff timer to the second pseudo-random value upon sending the second control message.

52. The apparatus of claim 49, wherein the first and second control messages comprise first and second resource requests, respectively.

53. The apparatus of claim 52, wherein the at least one processor is configured to send the second resource request for a stream before the backoff timer expires if the stream has higher priority than a highest priority of at least one stream signaled in the first resource request.

54. The apparatus of claim 52, wherein the at least one processor is configured to send the second resource request for a stream before the backoff timer expires if the stream has a shortest latency deadline and the shortest latency deadline is not signaled in the first resource request.

55. A method for wireless communication, comprising:

sending a first control message;

selecting a first pseudo-random value within a window;

setting a backoff timer to the first pseudo-random value upon sending the first control message; and

determining whether to send a second control message based on the backoff timer.

56. The method of claim 55, further comprising:

sending the second control message if a response is not received for the first control message and the backoff timer expires.

57. The method of claim 55, wherein the first and second control messages comprise first and second resource requests, respectively.

58. The method of claim 57, further comprising:

sending the second resource request for a stream before the backoff timer expires if the stream has higher priority than a highest priority of at least one stream signaled in the first resource request.

59. The method of claim 57, further comprising:

sending the second resource request for a stream before the backoff timer expires if the stream has a shortest latency deadline and the shortest latency deadline is not signaled in the first resource request.