Efficient reporting of information in a wireless communication system

• US 20070168326A1
• Filed: 07/14/2006
• Published: 07/19/2007
• Est. Priority Date: 02/24/2003
• Status: Active Grant

• Current Assignee: Arnab Das, Junyi Li, Pablo Anigstein, Rajiv Laroia, Sathyadev Venkata Uppala, Sundeep Rangan
• Original Assignee: Qualcomm, Inc.
• Inventors: Das, Arnab, Uppala, Sathyadev Venkata, Laroia, Rajiv, Li, Junyi, Rangan, Sundeep, Anigstein, Pablo
• Granted Patent: US 9,661,519 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 1/0006 by adapting the transmission format
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports

Abstract

Techniques for efficiently sending reports in a wireless communication system are described. Reports may be sent repetitively in accordance with a reporting format. A terminal receives an assignment of a control channel used to send reports and determines a reporting format to use based on the assignment. The reporting format indicates a specific sequence of reports sent in specific locations of a control channel frame. The terminal generates a set of reports for each reporting interval and arranges the set of reports in accordance with the reporting format. The terminal repetitively sends a plurality of sets of reports in a plurality of reporting intervals. Reports may also be sent adaptively based on operating conditions. An appropriate reporting format may be selected based on the operating conditions of the terminal, which may be characterized by environment (e.g., mobility), capabilities, QoS, and/or other factors.

Claims

1. An apparatus comprising:

at least one processor configured to generate a set of reports for each of a plurality of reporting intervals, to arrange the set of reports for each reporting interval-in accordance with a reporting format, and to repetitively send a plurality of sets of reports in the plurality of reporting intervals; and

a memory coupled to the at least one processor.

2. The apparatus of claim 1, wherein the reporting format indicates a specific sequence of reports sent in specific locations of a control channel frame.

3. The apparatus of claim 2, wherein the control channel frame comprises multiple control channel segments, and wherein the reporting format includes at least one report in each of the multiple control channel segments.

4. The apparatus of claim 1, wherein the reporting format includes multiple types of report.

5. The apparatus of claim 4, wherein the multiple types of report are for signal-to-noise ratio (SNR), uplink request, available transmit power, interference, delay information, or a combination thereof.

6. The apparatus of claim 4, wherein the reporting format includes at least one report for each of the multiple types, the number of reports of each type being determined based on importance of the reports of that type.

7. The apparatus of claim 5, wherein reports for SNR and uplink request are sent more often than reports of other types.

8. The apparatus of claim 1, wherein the reporting format includes multiple reports of a particular report type in different locations of a control channel frame.

9. The apparatus of claim 1, wherein the reporting format includes reports of different sizes for at least one type of report.

10. The apparatus of claim 1, wherein the at least one processor is configured to determine a dictionary to use for a particular type of report from among multiple dictionaries available for the particular type, and to generate reports of the particular type in accordance with the dictionary.

11. The apparatus of claim 10, wherein the dictionary defines a format for each report of the particular type.

12. The apparatus of claim 10, wherein the particular type of report is for signal-to-noise ratio (SNR), and wherein the multiple dictionaries comprise a first dictionary for low mobility and a second dictionary for high mobility.

13. The apparatus of claim 10, wherein the particular type of report is for uplink request, and wherein the multiple dictionaries are for different quality of service (QoS) traffics.

14. The apparatus of claim 1, wherein the at least one processor is configured to receive an assignment of a control channel used to send reports and to determine the reporting format based on the assignment of the control channel.

15. The apparatus of claim 14, wherein the at least one processor is configured to use a first reporting format as the reporting format if a full assignment is received for the control channel, and to use a second reporting format as the reporting format if a partial assignment is received for the control channel.

16. The apparatus of claim 15, wherein the first reporting format includes a first number of control channel segments in one reporting interval, and wherein the second reporting format includes a second number of control channel segments in one reporting interval.

17. The apparatus of claim 15, wherein the first reporting format includes a first number of information bits in each control channel segment, and wherein the second reporting format includes a second number of information bits in each control channel segment.

18. The apparatus of claim 1, wherein the at least one processor is configured to scramble the set of reports for each reporting interval with a scrambling sequence associated with the reporting format.

19. A method comprising:

generating a set of reports for each of a plurality of reporting intervals;

arranging the set of reports for each reporting interval in accordance with a reporting format; and

repetitively sending a plurality of sets of reports in the plurality of reporting intervals.

20. The method of claim 19, further comprising:

receiving an assignment of a control channel used to send reports; and

determining the reporting format based on the assignment of the control channel.

21. The method of claim 19, further comprising:

determining a dictionary to use for a particular type of report from among multiple dictionaries available for the particular type; and

generating reports of the particular type in accordance with the dictionary.

22. An apparatus comprising:

means for generating a set of reports for each of a plurality of reporting intervals;

means for arranging the set of reports for each reporting interval in accordance with a reporting format; and

means for repetitively sending a plurality of sets of reports in the plurality of reporting intervals.

23. The apparatus of claim 22, further comprising:

means for receiving an assignment of a control channel used to send reports; and

means for determining the reporting format based on the assignment of the control channel.

24. The apparatus of claim 22, further comprising:

means for determining a dictionary to use for a particular type of report from among multiple dictionaries available for the particular type; and

means for generating reports of the particular type in accordance with the dictionary.

25. A computer-readable medium including instructions stored thereon, comprising:

a first instruction set for generating a set of reports for each of a plurality of reporting intervals;

a second instruction set for arranging the set of reports for each reporting interval in accordance with a reporting format; and

a third instruction set for directing repetitive transmission of a plurality of sets of reports in the plurality of reporting intervals.

26. A terminal comprising:

at least one processor configured to send reports in accordance with a first reporting format, to obtain an indication to use a second reporting format, and to send reports in accordance with the second reporting format; and

a memory coupled to the at least one processor.

27. The terminal of claim 26, wherein each of the first and second reporting formats indicates a specific sequence of reports sent in specific locations of a control channel frame.

28. The terminal of claim 26, wherein the at least one processor is configured to receive signaling with the indication to use the second reporting format.

29. The terminal of claim 26, wherein the at least one processor is configured to detect changes in operating conditions, to select the second reporting format based on detected changes in the operating conditions, and to generate the indication to use the second reporting format.

30. The terminal of claim 29, wherein the operating conditions are characterized by environment of the terminal, capabilities of the terminal, quality of service (QoS) of traffics for the terminal, or a combination thereof.

31. The terminal of claim 26, wherein the at least one processor is configured to detect changes in mobility of the terminal, to select the second reporting format based on the detected changes in the mobility of the terminal, and to generate the indication to use the second reporting format.

32. The terminal of claim 26, wherein the at least one processor is configured to detect changes in quality of service (QoS) of traffics for the terminal, to select the second reporting format based on the detected changes in QoS, and to generate the indication to use the second reporting format.

33. The terminal of claim 26, wherein the first reporting format is a default reporting format.

34. The terminal of claim 26, wherein each of the first and second reporting formats comprises a field indicative of a reporting format type for a current reporting interval.

35. The terminal of claim 26, wherein each of the first and second reporting formats comprises a field indicative of a reporting format type for a subsequent reporting interval.

36. The terminal of claim 26, wherein the at least one processor is configured to exchange signaling with a base station to change from the first reporting format to the second reporting format.

37. The terminal of claim 26, wherein the first and second reporting formats are associated with first and second dictionaries, respectively, for a particular report type, and wherein each dictionary defines a format for each report of the particular type.

38. The terminal of claim 26, wherein the at least one processor is configured to encode information bits for a report to generate code bits and to scramble the information bits or the code bits for the report.

39. The terminal of claim 26, wherein the at least one processor is configured to scramble selected ones of the reports sent in accordance with the first and second reporting formats.

40. The terminal of claim 26, wherein the at least one processor is configured to use a first scrambling sequence for reports sent in accordance with the first reporting format, and to use a second scrambling sequence for reports sent in accordance with the second reporting format.

41. A method comprising:

sending reports in accordance with a first reporting format;

obtaining an indication to use a second reporting format; and

sending reports in accordance with the second reporting format.

42. The method of claim 41, further comprising:

detecting changes in operating conditions; and

selecting the second reporting format based on the detected changes in the operating conditions.

43. The method of claim 41, further comprising:

detecting changes in mobility of a terminal; and

selecting the second reporting format based on the detected changes in the mobility of the terminal.

44. The method of claim 41, further comprising:

detecting changes in quality of service (QoS) of traffics for a terminal; and

selecting the second reporting format based on the detected changes in QoS.

45. An apparatus comprising:

means for sending reports in accordance with a first reporting format;

means for obtaining an indication to use a second reporting format; and

means for sending reports in accordance with the second reporting format.

46. The apparatus of claim 45, further comprising:

means for detecting changes in operating conditions; and

means for selecting the second reporting format based on the detected changes in the operating conditions.

47. The apparatus of claim 45, further comprising:

means for detecting changes in mobility of a terminal; and

means for selecting the second reporting format based on the detected changes in the mobility of the terminal.

48. The apparatus of claim 45, further comprising:

means for detecting changes in quality of service (QoS) of traffics for a terminal; and

means for selecting the second reporting format based on the detected changes in QoS.

49. A computer-readable medium including instructions stored thereon, comprising:

a first instruction set for generating reports in accordance with a first reporting format;

a second instruction set for obtaining an indication to use a second reporting format; and

a third instruction set for generating reports in accordance with the second reporting format.