Method and apparatus for high rate packet data transmission

• US 8,089,924 B2
• Filed: 09/29/2006
• Issued: 01/03/2012
• Est. Priority Date: 11/03/1997
• Status: Expired due to Fees

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Padovani, Roberto, Bender, Paul E., Black, Peter J., Grob, Matthew S., Hinderling, Jurg K., Sindhushayana, Nagabhushana T., Wheatley, Charles E. III
• Primary Examiner(s): PHUNKULH, BOB A
• Application Number:
  US11/540,285
• Publication Number:
  US 20070025320A1
• Time in Patent Office: 1,922 Days
• Field of Search: None
• US Class Current: 370/329
• CPC Class Codes: H04B 7/264 for data rate control
• CPC Class Codes: H04L 1/0002 by adapting the transmission rate
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/1809 Selective-repeat protocols
• CPC Class Codes: H04L 1/1829 Arrangements specially adapted for the receiver end
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 28/22 Negotiating communication rate
• CPC Class Codes: H04W 74/04 Scheduled access hybrid access H04W74/02
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

In a data communication system capable of variable rate transmission, high rate packet data transmission improves utilization of the forward link and decreases the transmission delay. Data transmission on the forward link is time multiplexed and the base station transmits at the highest data rate supported by the forward link at each time slot to one mobile station. The data rate is determined by the largest C/I measurement of the forward link signals as measured at the mobile station. Upon determination of a data packet received in error, the mobile station transmits a NACK message back to the base station. The NACK message results in retransmission of the data packet received in error. The data packets can be transmitted out of sequence by the use of sequence number to identify each data unit within the data packets.

Claims

1. An apparatus for a communication system, comprising:

means for generating a plurality of data sequences directed to one of a plurality of mobile stations, wherein the number of data sequences is determined based on a transmission data rate for the one of the plurality of mobile stations;

means for generating a sequence of pilot symbols directed to the plurality of mobile stations; and

means for multiplexing the plurality of data sequences and the sequence of pilot symbols in a time interval to provide a sequence of digital values for transmission on a communication channel.

2. The apparatus of claim 1, wherein the means for multiplexing is further configured to multiplex power control bits directed to the plurality of mobile stations with the plurality of data sequences and the sequence of pilot symbols in the time interval.

3. The apparatus of claim 1, wherein the plurality of data sequences are orthogonally covered.

4. The apparatus of claim 1, further comprising

means for spreading the plurality of data sequences with a plurality of orthogonal sequences to provide a plurality of orthogonally covered data sequences.

5. The apparatus of claim 1, wherein the plurality of data sequences are sent concurrently to the one of the plurality of mobile stations.

6. The apparatus of claim 1, wherein the plurality of data sequences have equal data rate.

7. The apparatus of claim 1, wherein the sequence of digital values is transmitted at full power.

8. The apparatus of claim 1, wherein data is sent to at most one mobile station in each time interval.

19. The apparatus of any of claims 1 to 10, wherein the apparatus is a computer-readable medium encoded with a computer program configured to increase data throughout and efficiency in the communication systems, when coupled to a computing device.

9. An apparatus for a communication system, comprising:

means for generating a plurality of data sequences directed to one of a plurality of mobile stations;

means for generating a sequence of pilot symbols directed to the plurality of mobile stations; and

means for multiplexing the plurality of data sequences and the sequence of pilot symbols in a time interval to provide a sequence of digital values for transmission on a communication channel, wherein the means for multiplexing is further configured to segment the plurality of data sequences into first and second subsets, insert the sequence of pilot symbols subsequent in time to the first subset, and insert the second subset subsequent in time to the sequence of pilot symbols.

10. An apparatus for a communication system, comprising:

means for generating a plurality of data sequences directed to one of a plurality of mobile stations;

means for generating a sequence of pilot symbols directed to the plurality of mobile stations; and

means for multiplexing the plurality of data sequences and the sequence of pilot symbols in a time interval to provide a sequence of digital values for transmission on a communication channel, wherein the means for multiplexing is further configured to puncture the plurality of data sequences to accommodate for the sequence of pilot symbols, such that a first subset of the plurality of data sequences precedes in time the sequence of pilot symbols, and the sequence of pilot symbols precedes in time a second subset of the plurality of data sequences.

11. An apparatus for a communication system, comprising:

means for periodocally receiving a quality indicator from one of a plurality of mobile stations, the quality indicator indicative of a quality of a link in the communication system;

means for generating a plurality of data sequences directed to the one of the plurality of mobile stations as a function of the quality indicator;

means for generating a sequence of pilot symbols directed to the plurality of mobile stations;

means for multiplexing the plurality of data sequences and the sequence of pilot symbols in a time interval to provide a sequence of digital values for transmission on a communication channel; and

means for transmitting the sequence of digital values.

12. The apparatus of claim 11, further comprising

means for determining a transmission data rate for the plurality of data sequences.

13. The apparatus of claim 12, wherein the quality indicator contains an indication of the quality of the link, and the transmission data rate maps to the indication of the quality of the link.

14. The apparatus of claim 12, wherein the quality indicator contains a requested data rate.

15. The apparatus of claim 14, wherein the transmission data rate corresponds to the requested data rate.

16. The apparatus of claim 11, wherein the quality indicator maps to an index.

17. The apparatus of claim 16, wherein the index corresponds to a transmission data rate.

18. The apparatus of claim 16, wherein the index corresponds to a set of traffic channel parameters.

20. A method in a communication system, comprising:

generating a plurality of data sequences directed to one of a plurality of mobile stations, wherein the number of data sequences is determined based on a transmission data rate for the one of the plurality of mobile stations;

generating a sequence of pilot symbols directed to the plurality of mobile stations; and

multiplexing the plurality of data sequences and the sequence of pilot symbols in a time interval to provide a sequence of digital values for transmission on a communication channel.

21. The method of claim 20, further comprising

multiplexing power control bits directed to the plurality of mobile stations with the plurality of data sequences and the sequence of pilot symbols in the time interval.

22. The method of claim 20, wherein the plurality of data sequences are orthogonally covered.

23. The method of claim 20, further comprising

spreading the plurality of data sequences with a plurality of orthogonal sequences to provide a plurality of orthogonally covered data sequences.

24. A method in a communication system, comprising:

generating a plurality of data sequences directed to one of a plurality of mobile stations;

generating a sequence of pilot symbols directed to the plurality of mobile stations; and

multiplexing the plurality of data sequences and the sequence of pilot symbols in a time interval to provide a sequence of digital values for transmission on a communication channel, the multiplexing comprising time-division-multiplexing the plurality of data sequences and the sequence of pilot symbols by segmenting the plurality of data sequences into first and second subsets, inserting the sequence of pilot symbols subsequent in time to the first subset, and inserting the second subset subsequent in time to the sequence of pilot symbols.

25. A method in a communication system, comprising:

generating a plurality of data sequences directed to one of a plurality of mobile stations;

generating a sequence of pilot symbols directed to the plurality of mobile stations; and

multiplexing the plurality of data sequences and the sequence of pilot symbols in a time interval to provide a sequence of digital values for transmission on a communication channel, the multiplexing comprising time-division-multiplexing the plurality of data sequences and the sequence of pilot symbols by puncturing the plurality of data sequences to accommodate for the sequence of pilot symbols, such that a first subset of the plurality of data sequences precedes in time the sequence of pilot symbols, and the sequence of pilot symbols precedes in time a second subset of the plurality of data sequences.

26. A method in a communication system, comprising:

receiving, periodically, a quality indicator from one of a plurality of mobile stations, the quality indicator indicative of a quality of a link in the communication system;

generating a plurality of data sequences directed to the one of the plurality of mobile stations as a function of the quality indicator;

generating a sequence of pilot symbols directed to the plurality of mobile stations;

multiplexing the plurality of data sequences and the sequence of pilot symbols in a time interval to provide a sequence of digital values for transmission on a communication channel; and

transmitting the sequence of digital values.

27. The method of claim 26, further comprising

determining a transmission data rate for the plurality of data sequences.

28. The method of claim 27, wherein the quality indicator contains an indication of the quality of the link, and the transmission data rate maps to the indication of the quality of the link.

29. The method of claim 27, wherein the quality indicator contains a requested data rate.

30. The method of claim 29, wherein the transmission data rate corresponds to the requested data rate.

31. The method of claim 26, wherein the quality indicator maps to an index.

32. The method of claim 31, wherein the index corresponds to a transmission data rate.

33. The method of claim 31, wherein the index corresponds to a set of traffic channel parameters.

34. An apparatus for generating an information signal for transmission on a carrier wave, comprising:

means for generating a pilot channel carrying a pilot signal directed to a plurality of receivers; and

means for generating a traffic channel carrying a plurality of data sequences directed to one of the plurality of receivers, wherein the number of data sequences is determined based on a transmission data rate for the one of the plurality of receivers, and wherein the traffic channel is multiplexed with the pilot channel in a time interval.

35. The apparatus of claim 34, further comprising

means for generating a power control channel carrying power control bits directed to the plurality of receivers, the power control channel being multiplexed with the pilot channel and the traffic channel in the time interval.

36. The apparatus of claim 35, wherein the power control channel is time-division-multiplexed with the traffic channel and the pilot channel.

37. An apparatus for a communication system, comprising:

means for receiving a sequence of digital values transmitted on a communication channel, the sequence of digital values comprising a plurality of data sequences multiplexed with a sequence of pilot symbols in a time interval, wherein the plurality of data sequences are directed to one of a plurality of receivers and the sequence of pilot symbols is directed to the plurality of receivers, and wherein the number of data sequences is determined based on a transmission data rate for the one of the plurality of receivers; and

means for decoding the plurality of data sequences.

38. The apparatus of claim 37, wherein the sequence of digital values further comprises power control bits multiplexed with the plurality of data sequences and the sequence of pilot symbols in the time interval, the power control bits being directed to the plurality of receivers.

39. The apparatus of claim 37, wherein the plurality of data sequences are orthogonally covered.

40. The apparatus of claim 37, wherein the plurality of data sequences are sent concurrently to the one of the plurality of receivers.

41. The apparatus of claim 37, wherein the plurality of data sequences have equal data rate.

42. The apparatus of claim 37, wherein the sequence of digital values is transmitted at full power.

43. The apparatus of claim 37, wherein data is sent to at most one receiver in each time interval.

52. The apparatus of any of claims 37-51, wherein the apparatus is a computer-readable medium encoded with a computer program configured to increase data throughput and efficiency in the communication system, when coupled to a computing device.

44. An apparatus for a communication system, comprising:

means for transmitting, periodically, a quality indicator from one of a plurality of receivers, the quality indicator indicative of a quality of a link in the communication system;

means for receiving a sequence of digital values transmitted on a communication channel, the sequence of digital values comprising a plurality of data sequences multiplexed with a sequence of pilot symbols in a time interval, wherein the plurality of data sequences are directed to the one of the plurality of receivers and the sequence of pilot symbols is directed to the plurality of receivers; and

means for receiving and decoding the plurality of data sequences as a function of the quality indicator.

45. The apparatus of claim 44, wherein the quality indicator contains an indication of the quality of the link.

46. The apparatus of claim 45, wherein the plurality of data sequences are received at a data rate corresponding to the indication of the quality of the link.

47. The apparatus of claim 44, wherein the quality indicator contains a requested data rate.

48. The apparatus of claim 47, wherein the plurality of data sequences are received at a data rate corresponding to the requested data rate.

49. The apparatus of claim 44, further comprising

means for mapping the quality indicator to an index.

50. The apparatus of claim 49, wherein the index corresponds to a transmission data rate.

51. The apparatus of claim 49, wherein the index corresponds to a set of traffic channel parameters.

53. A method in a communication system, comprising:

receiving a sequence of digital values transmitted on a communication channel, the sequence of digital values comprising a plurality of data sequences multiplexed with a sequence of pilot symbols in a time interval, wherein the plurality of data sequences are directed to one of a plurality of receivers and the sequence of pilot symbols is directed to the plurality of receivers, and wherein the number of data sequences is determined based on a transmission data rate for the one of the plurality of receivers; and

decoding the plurality of data sequences.

54. The method of claim 53, wherein the sequence of digital values further comprises power control bits multiplexed with the plurality of data sequences and the sequence of pilot symbols in the time interval, the power control bits being directed to the plurality of receivers.

55. The method of claim 53, wherein the plurality of data sequences are orthogonally covered.

56. A method in a communication system, comprising:

transmitting, periodically, a quality indicator from one of a plurality of receivers, the quality indicator indicative of a quality of a link in the communication system;

receiving a sequence of digital values transmitted on a communication channel, the sequence of digital values comprising a plurality of data sequences multiplexed with a sequence of pilot symbols in a time interval, wherein the plurality of data sequences are directed to the one of the plurality of receivers and the sequence of pilot symbols is directed to the plurality of receivers; and

receiving and decoding the plurality of data sequences as a function of the quality indicator.

57. The method of claim 56, wherein the quality indicator contains an indication of the quality of the link.

58. The method of claim 57, wherein the plurality of data sequences are received at a data rate corresponding to the indication of the quality of the link.

59. The method of claim 56, wherein the quality indicator contains a requested data rate.

60. The method of claim 59, wherein the plurality of data sequences are received at a data rate corresponding to the requested data rate.

61. The method of claim 56, further comprising mapping the quality indicator to an index.

62. The method of claim 61, wherein the index corresponds to a transmission data rate.

63. The method of claim 61, wherein the index corresponds to a set of traffic channel parameters.

64. A non transitory computer-readable medium encoded with a computer program for increasing data throughput and efficiency in a communication system, comprising:

instructions for generating a plurality of data sequences directed to one of a plurality of mobile stations wherein the number of data sequences is determined based on a transmission data rate for the one of the plurality of mobile stations;

instructions for generating a sequence of pilot symbols directed to the plurality of mobile stations; and

instructions for multiplexing the plurality of data sequences and the sequence of pilot symbols in a time interval to provide a sequence of digital values for transmission on a communication channel.

65. A computer-readable medium encoded with a computer program for increasing data throughput and efficiency in a communication system, comprising:

instructions for periodically receiving a quality indicator from one of a plurality of mobile stations, the quality indicator indicative of a quality of a link in the communication system;

instructions for generating a plurality of data sequences directed to the one of the plurality of mobile stations as a function of the quality indicator;

instructions for generating a plurality of data sequences directed to the one of the plurality of mobile stations as a function of the quality indicator;

instructions for generating a sequence of pilot symbols directed to the plurality of mobile stations;

instructions for multiplexing the plurality of data sequences and the sequence of pilot symbols in a time interval to provide a sequence of digital values for transmission on a communication channel; and

instructions for sending the sequence of digital values.

66. A non transitory computer-readable medium encoded with a computer program for increasing data throughput and efficiency in a communication system, comprising:

instructions for receiving a sequence of digital values transmitted on a communication channel, the sequence of digital values comprising a plurality of data sequences multiplexed with a sequence of pilot symbols in a time interval, wherein the plurality of data sequences are directed to one of a plurality of receivers and the sequence of pilot symbols is directed to the plurality of receivers and wherein the number of data sequences is determined based on a transmission data rate for the one of the plurality, of receivers; and

instructions for decoding the plurality of data sequences.

67. A computer-readable medium encoded with a computer program for increasing daa throughtput and efficiency in a communication system, comprising:

instructions for periodically sending a quality indicator from one of a plurality of receivers, the quality indicator indicative of a quality of a link in the communication system; and

instructions for receiving a sequence of digital values transmitted on a communication channel, the sequence of digital values comprising a plurality of data sequences multiplexed with a sequence of pilot symbols in a time interval, wherein the plurality of data sequences are directed to the one of the plurality of receivers and the sequence of pilot symbols is directed to the plurality of receivers; and

instructions for receiving and decoding the plurality of data sequences as a function of the quality indicator.

68. An apparatus for a communication system, comprising:

at least one processor configured

to generate a plurality of data sequences directed to one of a plurality of mobile stations, wherein the number of data sequences is determined based on a transmission data rate for the one of the plurality of mobile stations,

to generate a sequence of pilot symbols directed to the plurality of mobile stations, and

to multiplex the plurality of data sequences and the sequence of pilot symbols in a time interval to obtain a sequence of digital values for transmission on a communication channel.

69. The apparatus of claim 68, wherein the at least one processor is configured to multiplex power control bits directed to the plurality of mobile stations with the plurality of data sequences and the sequence of pilot symbols in the time interval.

70. The apparatus of claim 68, wherein the plurality of data sequences are orthogonally covered.

71. The apparatus of claim 68, wherein the at least one processor is configured to spread the plurality of data sequences with a plurality of orthogonal sequences to obtain a plurality of orthogonally covered data sequences.

72. The apparatus of claim 68, wherein the plurality of data sequences are sent concurrently to the one of the plurality of mobile stations.

73. The apparatus of claim 68, wherein the plurality of data sequences have equal data rate.

74. The apparatus of claim 68, wherein the sequence of digital values is transmitted at full power.

75. The apparatus of claim 68, wherein data is sent to at most one mobile station in each time interval.

76. An apparatus for a communication system, comprising:

at least one processor configured

to generate a plurality of data sequences directed to one of a plurality of mobile stations,

to generate a sequence of pilot symbols directed to the plurality of mobile stations, and

to multiplex the plurality of data sequences and the sequence of pilot symbols in a time interval to obtain a sequence of digital values for transmission on a communication channel, the multiplexing comprising time-division-multiplexing the plurality of data sequences and the sequence of pilot symbols by segmenting the plurality of data sequences into first and second subsets, inserting the sequence of pilot symbols subsequent in time to the first subset, and inserting the second subset subsequent in time to the sequence of pilot symbols.

77. An apparatus for a communication system, comprising:

at least one processor configured

to generate a plurality of data sequences directed to one of a plurality of mobile stations,

to generate a sequence of pilot symbols directed to the plurality of mobile stations, and

to multiplex the plurality of data sequences and the sequence of pilot symbols in a time interval to obtain a sequence of digital values for transmission on a communication channel, the multiplexing comprising time-division-multiplexing the plurality of data sequences and the sequence of pilot symbols by puncturing the plurality of data sequences to accommodate the sequence of pilot symbols, such that a first subset of the plurality of data sequences precedes in time the sequence of pilot symbols, and the sequence of pilot symbols precedes in time a second subset of the plurality of data sequences.

78. An apparatus for a communication system, comprising:

at least one processor configured

to receive, periodically, a quality indicator from one of a plurality of mobile stations, the quality indicator indicative of a quality of a link in the communication system,

to generate a plurality of data sequences directed to the one of the plurality of mobile stations as a function of the quality indicator,

to generate a sequence of pilot symbols directed to the plurality of mobile stations,

to multiplex the plurality of data sequences and the sequence of pilot symbols in a time interval to obtain a sequence of digital values for transmission on a communication channel, and

to send the sequence of digital values.

79. The apparatus of claim 78, wherein the at least one processor is configured to determine a transmission data rate for the plurality of data sequences.

80. The apparatus of claim 78, wherein the quality indicator comprises an indication of the quality of the link, and wherein the transmission data rate maps to the indication of the quality of the link.

81. The apparatus of claim 78, wherein the quality indicator comprises a requested data rate.

82. The apparatus of claim 81, wherein the transmission data rate corresponds to the requested data rate.

83. The apparatus of claim 78, wherein the quality indicator maps to an index.

84. The apparatus of claim 83, wherein the index corresponds to a transmission data rate.

85. The apparatus of claim 83, wherein the index corresponds to a set of traffic channel parameters.

86. An apparatus for a communication system, comprising:

at least one processor configured

to receive a sequence of digital values transmitted on a communication channel, the sequence of digital values comprising a plurality of data sequences multiplexed with a sequence of pilot symbols in a time interval, wherein the plurality of data sequences are directed to one of a plurality of receivers and the sequence of pilot symbols is directed to the plurality of receivers, and wherein the number of data sequences is determined based on a transmission data rate for the one of the plurality of receivers, and

to decode the plurality of data sequences.

87. The apparatus of claim 86, wherein the sequence of digital values further comprises power control bits multiplexed with the plurality of data sequences and the sequence of pilot symbols in the time interval, the power control bits being directed to the plurality of receivers.

88. The apparatus of claim 86, wherein the plurality of data sequences are orthogonally covered.

89. The apparatus of claim 86, wherein the plurality of data sequences are sent concurrently to the one of the plurality of receivers.

90. The apparatus of claim 86, wherein the plurality of data sequences have equal data rate.

91. The apparatus of claim 86, wherein the sequence of digital values is transmitted at full power.

92. The apparatus of claim 86, wherein data is sent to at most one receiver in each time interval.

93. An apparatus for a communication system, comprising:

at least one processor configured

to send, periodically, a quality indicator from one of a plurality of receivers, the quality indicator indicative of a quality of a link in the communication system,

to receive a sequence of digital values transmitted on a communication channel, the sequence of digital values comprising a plurality of data sequences multiplexed with a sequence of pilot symbols in a time interval, wherein the plurality of data sequences are directed to the one of the plurality of receivers and the sequence of pilot symbols is directed to the plurality of receivers, and

to receive and decode the plurality of data sequences as a function of the quality indicator.

94. The apparatus of claim 93, wherein the quality indicator comprises an indication of the quality of the link.

95. The apparatus of claim 94, wherein the plurality of data sequences are received at a data rate corresponding to the indication of the quality of the link.

96. The apparatus of claim 93, wherein the quality indicator comprises a requested data rate.

97. The apparatus of claim 96, wherein the plurality of data sequences are received at a data rate corresponding to the requested data rate.

98. The apparatus of claim 93, wherein the at least one processor is configured to map the quality indicator to an index.

99. The apparatus of claim 98, wherein the index corresponds to a transmission data rate.

100. The apparatus of claim 98, wherein the index corresponds to a set of traffic channel parameters.