Systems and methods for multiplexing control data for multiple data channels onto a single control channel

• US 7,613,144 B2
• Filed: 09/27/2004
• Issued: 11/03/2009
• 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:
  US10/952,265
• Publication Number:
  US 20050169211A1
• Time in Patent Office: 1,863 Days
• Field of Search: 455/561, 455/450, 455/451, 455/452.1, 455/422.1, 455/403, 455/464, 455/466, 455/509, 455515-517, 455/550.1, 455/556.2, 455/59.61, 455/414.4, 455/452.2, 455424-425, 455/434, 370/310, 370313-314, 370328-330, 370335-338, 370340-345, 370347-350, 370441-442, 370/458, 370/461, 370538-543, 370913-916, 370326-327, 370/389, 370/391, 370/436, 370/471, 370/474, 370/477, 370/535, 370/211, 370/537, 370/235, 370/265, 370/321, 370393-394, 370521-522, 370300-302, 370/236, 370/294, 370/295, 370/336, 370/339, 370/341, 370/349
• US Class Current: 370/328
• CPC Class Codes: H04B 7/264 for data rate control

Abstract

Systems and methods for communicating control data for multiple data channels using a single control channel. In one embodiment, a method is implemented in a WCDMA communications system. This method includes combining data rate information for a first data channel and data rate information for a second data channel in a mobile station, encoding the combined data rate information and transmitting the encoded combined data rate information from the mobile station to a base station via a single control channel. This method further includes receiving the encoded combined data rate information in the base station, decoding the encoded combined data rate information to produce the combined data rate information, and extracting the data rate information for the first and second data channels and decoding the first and second data channels using this information.

Claims

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

combining data rate information for a first data channel and data rate information for a second data channel;

encoding the combined data rate information;

transmitting the encoded combined data rate information via a single control channel;

transmitting a first frame of data on the first data channel at a first data rate, the first frame of data is decoded at a receiver using the data rate information for the first data channel; and

transmitting a second frame of data on the second data channel at a second data rate, the second frame of data is decoded at the receiver using the data rate information for the second channel.

2. The method of claim 1, further comprising selecting a first data rate for the first data channel and selecting a second data rate for the second data channel.

3. The method of claim 2, wherein the data rate information for the first data channel comprises a first data rate indicator corresponding to the first data rate and the data rate information for the second data channel comprises a second data rate indicator corresponding to the second data rate.

4. The method of claim 3, wherein combining the data rate information for the first data channel and the data rate information for the second data channel comprises multiplexing the first and second data rate indicators into a set of data rate bits.

5. The method of claim 4, wherein multiplexing the first and second data rate indicators into the set of data rate bits comprises appending one of the data rate indicators onto the other of the data rate indicators.

6. The method of claim 4, wherein encoding the combined data rate information comprises covering the combined data rate information with spreading codes.

7. The method of claim 1, wherein the combined data rate information comprises ten bits and the encoded combined data rate information comprises 30 bits.

8. The method of claim 7, wherein the encoded combined data rate information is transmitted on the control channel in a 10 millisecond frame.

9. The method of claim 8, wherein two of the 30 bits of the encoded combined data rate information are transmitted in each of 15 slots within the frame.

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

receiving encoded combined data rate information via a single control channel;

receiving a first frame of data on a first data channel at a first data rate;

receiving a second frame of data on a second data channel at a second data rate;

decoding the encoded combined data rate information to produce combined data rate information;

extracting data rate information for the first data channel and data rate information for the second data channel from the combined data rate information;

decoding the first frame of data using the data rate information for the first data channel; and

decoding the second frame of data using the data rate information for the second data channel.

11. The method of claim 10, wherein the combined data rate information comprises a set of data rate bits and wherein extracting the data rate information for the first data channel and the data rate information for the second data channel from the combined data rate information comprises dividing the set of data rate bits into a first data rate indicator and a second data rate indicator.

12. The method of claim 10, wherein the combined data rate information comprises ten bits.

13. The method of claim 10, wherein bits of the encoded combined data rate information are received in each of a plurality of slots of a received frame.

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

combining data rate information for a first data channel and data rate information for a second data channel;

encoding the combined data rate information;

transmitting the encoded combined data rate information via a single control channel;

receiving the encoded combined data rate information via the single control channel;

decoding the encoded combined data rate information to produce the combined data rate information;

extracting the data rate information for the first data channel and the data rate information for the second data channel from the combined data rate information;

transmitting a first frame of data on the first data channel at the first data rate and transmitting a second frame of data on the second data channel at the second data rate;

receiving the first frame of data on the first data channel and the second frame of data on the second data channel; and

decoding the first frame of data using the data rate information for the first data channel and decoding the second frame of data using the data rate information for the second data channel.

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

a transceiver subsystem that transmits a first frame of data on a first data channel at a first data rate and a second frame of data on a second data channel at a second data rate; and

a processing subsystem coupled to the transceiver subsystem and configured to combine data rate information for the first data channel and data rate information for the second data channel, encode the combined data rate information, and transmit the encoded combined data rate information via a single control channel, the first frame of data is decoded at a receiver using the data rate information for the first data channel, and the second frame of data is decoded at a receiver using the data rate information for the second data channel.

16. The mobile station of claim 15, wherein the processing subsystem is further configured to select a first data rate for the first data channel and select a second data rate for the second data channel.

17. The mobile station of claim 16, wherein the data rate information for the first data channel comprises a first data rate indicator corresponding to the first data rate and the data rate information for the second data channel comprises a second data rate indicator corresponding to the second data rate.

18. The mobile station of claim 17, wherein the processing subsystem is configured to combine the data rate information for the first data channel and the data rate information for the second data channel by multiplexing the first and second data rate indicators into a set of data rate bits.

19. The mobile station of claim 18, wherein the processing subsystem is configured to multiplex the first and second data rate indicators into the set of data rate bits by appending one of the data rate indicators onto the other of the data rate indicators.

20. The mobile station of claim 18, wherein the processing subsystem is configured to encode the combined data rate information by covering the combined data rate information with spreading codes.

21. The mobile station of claim 15, wherein the combined data rate information comprises ten bits and the encoded combined data rate information comprises 30 bits.

22. The mobile station of claim 21, wherein the processing subsystem is configured to transmit the encoded combined data rate information on the control channel in a 10 millisecond frame.

23. The mobile station of claim 22, wherein the processing subsystem is configured to transmit two of the 30 bits of the encoded combined data rate information in each of 15 slots within the frame.

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

a transceiver subsystem that receives a first frame of data on a first data channel at a first data rate and a second frame of data on a second data channel at a second data rate; and

a processing subsystem coupled to the transceiver subsystem and configured to receive encoded combined data rate information via a single control channel, decode the encoded combined data rate information to produce combined data rate information, and extract data rate information for the first data channel and data rate information for the second data channel from the combined data rate information, the processing subsystem decodes the first frame of data using the data rate information for the first data channel and decodes the second frame of data using the data rate information for the second data channel.

25. The base station of claim 24, wherein the combined data rate information comprises a set of data rate bits and wherein the processing subsystem is configured to extract the data rate information for the first data channel and the data rate information for the second data channel from the combined data rate information by dividing the set of data rate bits into a first data rate indicator and a second data rate indicator.

26. The base station of claim 24, wherein the combined data rate information comprises ten bits.

27. The base station of claim 24, wherein the processing subsystem is configured to

receive bits of the encoded combined data rate information in each of a plurality of slots of a received frame.

28. A wireless communication system comprising:

a mobile station configured to;

combine first data rate information for a first data channel and second data rate information for a second data channel;

encode the combined data rate information;

transmit the encoded combined data rate information via a single control channel;

transmit a first frame of data on the first data channel at the first data rate; and

transmit a second frame of data on the second data channel at the second data rate; and

a base station configured to;

receive the encoded combined data rate information via the single control channel;

decode the encoded combined data rate information to produce the combined data rate information; and

extract the data rate information for the first data channel and the data rate information for the second data channel from the combined data rate information;

receive the first frame of data on the first data channel;

receive the second frame of data on the second data channel;

decode the first frame of data using the data rate information for the first data channel; and

decode the second frame of data using the data rate information for the second data channel.

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

means for combining data rate information for a first data channel and data rate information for a second data channel;

means for encoding the combined data rate information;

means for transmitting the encoded combined data rate information via a single control channel;

means for transmitting a first frame of data on the first data channel at a first data rate, the first frame of data is decoded at a receiver using the data rate information for the first data channel; and

means for transmitting a second frame of data on the second data channel at a second data rate, the second frame of data is decoded at the receiver using the data rate information for the second channel.

30. The mobile station of claim 29, further comprising means for selecting a first data rate for the first data channel and selecting a second data rate for the second data channel.

31. The mobile station of claim 30, wherein the data rate information for the first data channel comprises a first data rate indicator corresponding to the first data rate and the data rate information for the second data channel comprises a second data rate indicator corresponding to the second data rate.

32. The mobile station of claim 31, wherein the means for combining the data rate information for the first data channel and the data rate information for the second data channel comprises means for multiplexing the first and second data rate indicators into a set of data rate bits.

33. The mobile station of claim 32, wherein the means for multiplexing the first and second data rate indicators into the set of data rate bits comprises means for appending one of the data rate indicators onto the other of the data rate indicators.

34. The mobile station of claim 32, wherein the means for encoding the combined data rate information comprises means for covering the combined data rate information with spreading codes.

35. The mobile station of claim 29, wherein the combined data rate information comprises ten bits and the encoded combined data rate information comprises 30 bits.

36. The mobile station of claim 35, wherein the encoded combined data rate information is transmitted on the control channel in a 10 millisecond frame.

37. The mobile station of claim 36, wherein two of the 30 bits of the encoded combined data rate information are transmitted in each of 15 slots within the frame.

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

means for receiving encoded combined data rate information via a single control channel;

means for receiving a first frame of data on a first data channel at a first data rate;

means for receiving a second frame of data on a second data channel at a second data rate;

means for decoding the encoded combined data rate information to produce combined data rate information; and

means for extracting data rate information for the first data channel and data rate information for the second data channel from the combined data rate information;

means for decoding the first frame of data using the data rate information for the first data channel; and

means for decoding the second frame of data using the data rate information for the second data channel.

39. The base station of claim 38, wherein the combined data rate information comprises a set of data rate bits and wherein the means for extracting the data rate information for the first data channel and the data rate information for the second data channel from the combined data rate information comprises means for dividing the set of data rate bits into a first data rate indicator and a second data rate indicator.

40. The base station of claim 38, wherein the combined data rate information comprises ten bits.

41. The base station of claim 38, wherein bits of the encoded combined data rate information are received in each of a plurality of slots of a received frame.

42. A computer computer-readable medium comprising:

a first code for causing a computer to combine data rate information for a first data channel and data rate information for a second data channel;

means for encoding the combined data rate information;

a second code for causing the computer to transmit the encoded combined data rate information via a single control channel;

a third code for causing the computer to transmit a first frame of data on the first data channel at a first data rate, the first frame of data is decoded at a receiver using the data rate information for the first data channel; and

a fourth code for causing the computer to transmit a second frame of data on the second data channel at a second data rate, the second frame of data is decoded at the receiver using the data rate information for the second channel.

43. The computer computer-readable medium of claim 42, further comprising code for causing a computer to select a first data rate for the first data channel and selecting a second data rate for the second data channel.

44. The computer computer-readable medium of claim 43, wherein the data rate information for the first data channel comprises a first data rate indicator corresponding to the first data rate and the data rate information for the second data channel comprises a second data rate indicator corresponding to the second data rate.

45. The computer computer-readable medium of claim 44, wherein the code for causing a computer to combine the data rate information for the first data channel and the data rate information for the second data channel comprises code for causing a computer to multiplex the first and second data rate indicators into a set of data rate bits.

46. The computer computer-readable medium of claim 45, wherein the code for causing a computer to multiplex the first and second data rate indicators into the set of data rate bits comprises code for causing a computer to append one of the data rate indicators onto the other of the data rate indicators.

47. The computer computer-readable medium of claim 45, wherein the code for causing a computer to encode the combined data rate information comprises code for causing a computer to cover the combined data rate information with spreading codes.

48. The computer computer-readable medium of claim 42, wherein the combined data rate information comprises ten bits and the encoded combined data rate information comprises 30 bits.

49. The computer computer-readable medium of claim 48, wherein the encoded combined data rate information is transmitted on the control channel in a 10 millisecond frame.

50. The computer computer-readable medium of claim 49, wherein two of the 30 bits of the encoded combined data rate information are transmitted in each of 15 slots within the frame.

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

means for receiving encoded combined data rate information via a single control channel;

means for receiving a first frame of data on a first data channel at a first data rate;

means for receiving a second frame of data on a second data channel at a second data rate;

means for decoding the encoded combined data rate information to produce combined data rate information; and

means for extracting data rate information for the first data channel and data rate information for the second data channel from the combined data rate information;

means for decoding the first frame of data using the data rate information for the first data channel; and

means for decoding the second frame of data using the data rate information for the second data channel.

52. The computer-readable medium base station of claim 51, wherein the combined data rate information comprises a set of data rate bits and wherein the means for extracting the data rate information for the first data channel and the data rate information for the second data channel from the combined data rate information comprises means for dividing the set of data rate bits into a first data rate indicator and a second data rate indicator.

53. The computer-readable medium base station of claim 51, wherein the combined data rate information comprises ten bits.

54. The base station of claim 51, wherein bits of the encoded combined data rate information are received in each of a plurality of slots of a received frame.