Reliable uplink resource request

• US 20100074193A1
• Filed: 10/31/2007
• Published: 03/25/2010
• Est. Priority Date: 10/31/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Chaponniere, Etienne F.
• Granted Patent: US 8,824,381 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04W 52/32 TPC of broadcast or control channels
• CPC Class Codes: H04W 52/50 at the moment of starting communication in a multiple access environment
• CPC Class Codes: H04W 74/0866 using a dedicated channel for access

Abstract

Systems and methodologies are described that facilitate reliably requesting uplink resources in a wireless communications environment. In particular, mechanisms are provided for reliable uplink resource requests at instants when uplink resources are not retained. A mobile device transmits an uplink resource request on a feedback information channel conventionally utilized for channel quality indicators. The mobile device utilizes specific codewords reserved for uplink requests. In addition, a power spectral density of the feedback information channel is boosted to lower an error rate of the channel when reserved codewords are transmitted.

Claims

1. A method that facilitates obtaining resources in a wireless communications environment, comprising:

transmitting an uplink resource request on a feedback information channel; and

increasing a power spectral density of the feedback information channel, the increase improves reliability of the transmission.

2. The method of claim 1, further comprising reserving one or more codewords for uplink resource requests.

3. The method of claim 2, transmitting the uplink resource request comprises sending at least one of the one or more reserved codewords on the feedback information channel.

4. The method of claim 1, further comprising reducing the power spectral density of the feedback information channel subsequent to transmission of the uplink resource request.

5. The method of claim 1, further comprising obtaining a power level threshold value that represents a boost amount required to achieve a target error rate.

6. The method of claim 5, increasing the power spectral density comprises increasing a current power spectral density value by the boost amount.

7. The method of claim 1, the feedback information channel is a channel quality information channel conventionally employed to transmit channel quality indicators.

8. A wireless communications apparatus, comprising:

a memory that retains instructions related to transmitting an uplink resource request on a feedback information channel and increasing a power spectral density of the feedback information channel, the increase improves reliability of the transmission; and

a processor coupled to the memory, configured to execute the instructions retained in the memory.

9. The wireless communications apparatus of claim 8, the memory further retains instructions for reserving one or more codewords for uplink resource requests.

10. The wireless communications apparatus of claim 9, the memory retains the one or more reserved codewords.

11. The wireless communications apparatus of claim 8, the memory further retains instructions for reducing the power spectral density of the feedback information channel subsequent to transmission of the uplink resource request.

12. The wireless communications apparatus of claim 8, the memory further retains instructions for obtaining a power level threshold value that represents a boost amount required to achieve a target error rate.

13. The wireless communications apparatus of claim 11, the instructions related to increasing the power spectral density comprise instructions related to increasing a current power spectral density value by the boost amount.

14. The wireless communications apparatus of claim 8, wherein the feedback information channel is a channel quality information channel conventionally employed to transmit channel quality indicators.

15. A wireless communications apparatus that facilitates obtaining resources in a wireless communications environment, comprising:

means for transmitting an uplink resource request on a feedback information channel; and

means for increasing a power spectral density of the feedback information channel, the increase improves reliability of the transmission.

16. The wireless communications apparatus of claim 15, further comprising means for reserving one or more codewords for uplink resource requests.

17. The wireless communications apparatus of claim 16, means for transmitting the uplink resource request comprises means for sending at least one of the one or more reserved codewords on the feedback information channel.

18. The wireless communications apparatus of claim 15, further comprising means for reducing the power spectral density of the feedback information channel subsequent to transmission of the uplink resource request.

19. The wireless communications apparatus of claim 15, further comprising means for obtaining a power level threshold value that represents a boost amount required to achieve a target error rate.

20. The wireless communications apparatus of claim 19, means for increasing the power spectral density comprises means for increasing a current power spectral density value by the boost amount.

21. The wireless communications apparatus of claim 20, the feedback information channel is a channel quality information channel conventionally employed to transmit channel quality indicators.

22. A machine-readable medium having stored thereon machine-executable instructions for:

transmitting an uplink resource request on a feedback information channel; and

increasing a power spectral density of the feedback information channel, the increase improves reliability of the transmission.

23. The machine-readable medium of claim 22, further comprising instructions for reserving one or more codewords for uplink resource requests.

24. The machine-readable medium of claim 23, transmitting the uplink resource request comprises sending at least one of the one or more reserved codewords on the feedback information channel.

25. The machine-readable medium of claim 22, further comprising instructions for reducing the power spectral density of the feedback information channel subsequent to transmission of the uplink resource request.

26. The machine-readable medium of claim 22, further comprising instructions for obtaining a power level threshold value that represents a boost amount required to achieve a target error rate.

27. The machine-readable medium of claim 26, increasing the power spectral density comprises increasing a current power spectral density value by the boost amount.

28. The machine-readable medium of claim 22, the feedback information channel is a channel quality information channel conventionally employed to transmit channel quality indicators.

29. In a wireless communication system, an apparatus comprising:

an integrated circuit configured to;

transmit an uplink resource request on a feedback information channel; and

increase a power spectral density of the feedback information channel, the increase improves reliability of the transmission.

30. A method that facilitates providing uplink resources in a wireless communications environment, comprising:

identifying an uplink resource request on a feedback information channel; and

scheduling resources with respect to one or more mobile devices based at least in part on the identified uplink resource request.

31. The method of claim 30, further comprising receiving a data transmission on the feedback information channel.

32. The method of claim 30, identifying the uplink resource request comprises recognizing at least one of a set of codewords reserved to represent uplink resource requests.

33. The method of claim 30, the feedback information channel is a channel quality information channel conventionally employed to transmit channel quality indicators.

34. A wireless communications apparatus, comprising:

a memory that retains instructions related to identifying an uplink resource request on a feedback information channel and scheduling resources with respect to one or more mobile devices based at least in part on the identified uplink resource request; and

a processor coupled to the memory, configured to execute the instructions retained in the memory.

35. The wireless communications apparatus of claim 34, the memory further retains instructions related to receiving a data transmission on the feedback information channel.

36. The wireless communications apparatus of claim 34, wherein identifying the uplink resource request comprises recognizing at least one of a set of codewords reserved to represent uplink resource requests.

37. The wireless communications apparatus of claim 34, wherein the feedback information channel is a channel quality information channel conventionally employed to transmit channel quality indicators.

38. A wireless communications apparatus that facilitates providing uplink resources in a wireless communications environment, comprising:

means for identifying an uplink resource request on a feedback information channel; and

means for scheduling resources with respect to one or more mobile devices based at least in part on the identified uplink resource request.

39. The wireless communications apparatus of claim 38, further comprising means for receiving a data transmission on the feedback information channel.

40. The wireless communications apparatus of claim 38, identifying the uplink resource request comprises recognizing at least one of a set of codewords reserved to represent uplink resource requests.

41. The wireless communications apparatus of claim 38, the feedback information channel is a channel quality information channel conventionally employed to transmit channel quality indicators.

42. A machine-readable medium having stored thereon machine-executable instructions for:

identifying an uplink resource request on a feedback information channel; and

scheduling resources with respect to one or more mobile devices based at least in part on the identified uplink resource request.

43. The machine-readable medium of claim 42, further comprising instructions for receiving a data transmission on the feedback information channel.

44. The machine-readable medium of claim 42, identifying the uplink resource request comprises recognizing at least one of a set of codewords reserved to represent uplink resource requests.

45. The machine-readable medium of claim 42, the feedback information channel is a channel quality information channel conventionally employed to transmit channel quality indicators.

46. In a wireless communication system, an apparatus comprising:

an integrated circuit configured to;

identify an uplink resource request on a feedback information channel; and

schedule resources with respect to one or more mobile devices based at least in part on the identified uplink resource request.