Systems and methods for communicating control data using multiple slot formats

• US 7,474,643 B2
• Filed: 09/27/2004
• Issued: 01/06/2009
• Est. Priority Date: 10/02/2003
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Malladi, Durga Prasad, Willenegger, Serge D., Zhang, Xiaoxia
• Primary Examiner(s): Zewdu; Meless N
• Application Number:
  US10/952,426
• Publication Number:
  US 20050163075A1
• Time in Patent Office: 1,562 Days
• Field of Search: 370320-321, 370/280, 370/294, 370/310, 370/485, 370/487, 370/522, 370/908, 370901-902, 370912-913, 370/915, 370229-231, 370/235, 370264-265, 370/318, 370/326, 370328-330, 370335-338, 370340-350, 370431-432, 370436-437, 370441-443, 370/462, 370464-465, 370468-474, 370476-480, 370/491, 370493-498, 370/500, 370/508, 370512-514, 370/524, 370/529, 370536-554, 455/41.2, 455/422.1, 455450-451, 455/509, 455/550.1, 455/556.2, 455560-561, 455/13.4, 455 68- 70, 455418-420, 455/434, 4554521-4522, 455/455, 455/464, 455/466, 455/511, 455515-517, 455/522
• US Class Current: 370/329
• CPC Class Codes: H04B 7/2618 using hybrid code-time division multiple access [CDMA-TDMA]
• CPC Class Codes: H04B 7/2637 for logical channel control
• CPC Class Codes: H04B 7/2659 for data rate control
• CPC Class Codes: H04L 1/0002 by adapting the transmission rate
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 28/22 Negotiating communication rate
• CPC Class Codes: H04W 52/58 Format of the TPC bits

Abstract

Systems and methods for communicating control information in slots that use at least two different slot formats. In one embodiment, a method implemented in a wireless communication system includes providing at least two different slot formats, formatting control data in the slots of a control frame according to the at least two different slot formats, transmitting the control frame from a mobile station to a base station via a control channel, receiving the control frame, extracting data rate information from the control frame according to the at least two different slot formats, decoding the extracted control data, parsing the extracted data into separate data rate information and decoding data received via one or more data channels using the decoded control data. In one embodiment, the method is used to enable additional TFCI data corresponding to two different data channels to be transmitted on a single control channel.

Claims

1. A method implemented in a mobile station of a wireless communication system, the method comprising:

providing at least two different slot formats for a plurality of slots in a control frame in a dedicated control channel, wherein the at least two different slot formats employ different number of bits to retain control data;

formatting the control data according to the at least two different slot formats; and

transmitting the control data in the at least two different slot formats.

2. The method of claim 1, wherein the slot formats of the plurality of slots in the control frame form a repeating pattern.

3. The method of claim 1, wherein an identical set of slot formats is used in every control frame.

4. The method of claim 1, wherein a first one of the at least two different slot formats includes a different number of pilot data bits than a second one of the at least two different slot formats.

5. The method of claim 1, wherein a first one of the at least two different slot formats includes a different number of power control data bits than a second one of the at least two different slot formats.

6. The method of claim 1, wherein a first one of the at least two different slot formats includes a different number of TFCI data bits than a second one of the at least two different slot formats.

7. A method implemented in a base station of a wireless communication system, the method comprising:

receiving frames of control information via a dedicated control channel;

extracting control data from the frames of the control information according to at least two different slot formats, wherein the at least two different slot formats employ different number of bits to retain control data for a plurality of slots in a control frame;

decoding the extracted control data; and

decoding data received via one or more data channels using the decoded control data.

8. The method of claim 7, wherein the slot formats of the plurality of slots in the control frame form a repeating pattern.

9. The method of claim 7, wherein an identical set of slot formats is used in every frame of control information.

10. The method of claim 7, wherein a first one of the at least two different slot formats includes a different number of pilot data bits than a second one of the at least two different slot formats.

11. The method of claim 7, wherein a first one of the at least two different slot formats includes a different number of power control data bits than a second one of the at least two different slot formats.

12. The method of claim 7, wherein a first one of the at least two different slot formats includes a different number of TFCI data bits than a second one of the at least two different slot formats.

13. A method implemented in a wireless communication system, the method comprising:

providing at least two different slot formats, a first slot format and a disparate slot format, employing different number of bits to retain control data;

formatting control data for a plurality of slots in a control frame according to the at least two different slot formats; and

transmitting the formatted control data for the plurality of slots in the control frame in the at least two different slot formats from a mobile station to a base station via a control channel;

receiving the control frame;

extracting the control data from the control frame according to the at least two different slot formats;

decoding the extracted control data; and

decoding data received via one or more data channels using the decoded control data.

14. The method of claim 13, wherein the slot formats of the plurality of slots in the control frame form a repeating pattern.

15. The method of claim 13, wherein an identical set of slot formats is used in every control frame.

16. The method of claim 13, wherein a first one of the at least two different slot formats includes a different number of pilot data bits than a second one of the at least two different slot formats.

17. The method of claim 13, wherein a first one of the at least two different slot formats includes a different number of power control data bits than a second one of the at least two different slot formats.

18. The method of claim 13, wherein a first one of the at least two different slot formats includes a different number of TFCI data bits than a second one of the at least two different slot formats.

19. A mobile station for a wireless communication system comprising:

a transceiver subsystem; and

a processing subsystem coupled to the transceiver subsystem and configured to;

provide at least two different slot formats, wherein the at least two different slot formats employ different number of bits to retain control data for a plurality of slots in a control frame;

format the control data according to the at least two different slot formats; and

wherein the transceiver subsystem is configured to transmit the control data in the at least two different slot formats in a control frame via a dedicated control channel.

20. The mobile station of claim 19, wherein the slots formats of the plurality of slots in the control frame form a repeating pattern.

21. The mobile station of claim 19, wherein an identical set of slot formats is used in every control frame.

22. The mobile station of claim 19, wherein a first one of the at least two different slot formats includes a different number of pilot data bits than a second one of the at least two different slot formats.

23. The mobile station of claim 19, wherein a first one of the at least two different slot formats includes a different number of power control data bits than a second one of the at least two different slot formats.

24. The mobile station of claim 19, wherein a first one of the at least two different slot formats includes a different number of TFCI data bits than a second one of the at least two different slot formats.

25. A base station for a wireless communication system comprising:

a transceiver subsystem configured to receive frames of control information via a dedicated control channel; and

a processing subsystem coupled to the transceiver subsystem and configured to extract control data from the frames of the control information according to at least two different slot formats for a plurality of slots, decode the extracted control data, and decode data received via one or more data channels using the decoded control data, wherein the at least two slot employ different formats employ different number of bits to retain the control data.

26. The base station of claim 25, wherein the slot formats of the plurality of slots in the control frame from a repeating pattern.

27. The base station of claim 25, wherein an identical set of slot formats is used in every frame of control information.

28. The base station of claim 25, wherein a first one of the at least two different slot formats includes a different number of pilot data bits than a second one of the at least two different slot formats.

29. The base station of claim 25, wherein a first one of the at least two different slot formats includes a different number of power control data bits than a second one of the at least two different slot formats.

30. The base station of claim 25, wherein a first one of the at least two different slot formats includes a different number of TFCI data bits than a second one of the at least two different slot formats.

31. A wireless communication system comprising:

a mobile station configured to;

provide at least two different slot formats, wherein the at least two slot formats employ different number of bits to retain control data,

format the control data for a plurality of slots in a control frame according to the at least two different slot formats, and

transmit the control data for the plurality of slots in the control frame in the at least two different slot formats, and

a base station configured to;

receive the control frame via a dedicated control channel, extract the control data from the control frame according to the at least two different slot formats,

decode the extracted control data, and

decode data received via one or more data channels using the decoded control data.

32. The wireless communication system of claim 31, wherein the slot formats of the plurality of slots in the control frame form a repeating pattern.

33. The wireless communication system of claim 31, wherein an identical set of slot formats is used in every control frame.

34. The wireless communication system of claim 31, wherein a first one of the at least two different slot formats includes a different number of pilot data bits than a second one of the at least two different slot formats.

35. The wireless communication system of claim 31, wherein a first one of the at least two different slot formats includes a different number of power control data bits than a second one of the at least two different slot formats.

36. The wireless communication system of claim 31, wherein a first one of the at least two different slot formats includes a different number of TFCI data bits than a second one of the at least two different slot formats.

37. A mobile station for a wireless communication system comprising:

transceiver means; and

processing means coupled to the transceiver means and configured to;

provide at least two different slot formats for a plurality of slots, wherein the at least two different slot formats employ different number of bits to retain control data for a plurality of slots in a control frame;

format the control data according to the at least two different slot formats; and

wherein the transceiver means is configured to transmit the control data in the at least two different slot formats in the control frame via a dedicated control channel.

38. The mobile station of claim 37, wherein the slot formats of the plurality of slots in the control frame form a repeating pattern.

39. The mobile station of claim 37, wherein an identical set of slot formats is used in every control frame.

40. The mobile station of claim 37, wherein a first one of the at least two different slot formats includes a different number of pilot data bits than a second one of the at least two different slot formats.

41. The mobile station of claim 37, wherein a first one of the at least two different slot formats includes a different number of power control data bits than a second one of the at least two different slot formats.

42. The mobile station of claim 37, wherein a first one of the at least two different slot formats includes a different number of TFCI data bits than a second one of the at least two different slot formats.

43. A base station for a wireless communication system comprising:

transceiver means configured to receive frames of control information via a dedicated control channel; and

processing means coupled to the transceiver means and configured to extract control data from the frames of the control information in the dedicated control channel according to at least two different slot formats for a plurality of slots, decode the extracted control data, and decode data received via one or more data channels using the decoded control data, and wherein the at least two different slot formats employ different number of bits to retain the control data, wherein the at least two different slot formats form a repeating pattern.

44. The base station of claim 43, wherein an identical set of slot formats is used in every frame of control information.

45. The base station of claim 43, wherein a first one of the at least two different slot formats includes a different number of pilot data bits than a second one of the at least two different slot formats.

46. The base station of claim 43, wherein a first one of the at least two different slot formats includes a different number of power control data bits than a second one of the at least two different slot formats.

47. The base station of claim 43, wherein a first one of the at least two different slot formats includes a different number of TFCI data bits than a second one of the at least two different slot formats.

48. A computer-readable medium having a computer program, which when executed by at least one processor, operates to transmit control data, the computer program comprising:

instructions for providing at least two different slot formats for a plurality of slots in a control frame in a dedicated control channel, wherein the at least two different slot formats employ different number of bits to retain control data;

instructions for formatting the control data according to the at least two different slot formats; and

instructions for transmitting the control data in the at least two different slot formats.

49. At least one processor configured to perform a method of transmitting control data, the method comprising:

providing at least two different slot formats for a plurality of slots in a control frame in a dedicated control channel, wherein the at least two different slot formats employ different number of bits to retain control data;

formatting the control data according to the at least two different slot formats; and

transmitting the control data in the at least two different slot formats.