METHOD AND APPARATUS FOR LOW-OVERHEAD PACKET DATA TRANSMISSION AND CONTROL OF RECEPTION MODE

• US 20080056229A1
• Filed: 08/17/2007
• Published: 03/06/2008
• Est. Priority Date: 10/31/2005
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Gholmieh, Aziz, Montojo, Juan, Chande, Vinay, Lundby, Stein, Ahuja, Bharat, Chaponniere, Etienne
• Granted Patent: US 8,625,601 B2
• Time in Patent Office: Days
• US Class Current: 370/349
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/1819 with retransmission of additional or different redundancy
• CPC Class Codes: H04L 1/1893 Physical mapping arrangements physical resource mapping in general H04L5/00
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method for wireless communications where a control packet is not transmitted for all transmissions of a new data packet. A control packet is only sent with a retransmission of a data packet where the previously transmitted data packet is not completely received. The control packet contains information related to a previously transmitted data packet. The previously transmitted data packet and the retransmission data packet are derived from common data. The common data is derived based on the information related to the previously transmitted data packet, wherein the previously transmitted data packet and the retransmission data packet are associated with a series of data packets.

Claims

1. A method for wireless communications comprising:

receiving a control packet comprising information related to a previously transmitted data packet;

receiving a retransmission data packet, wherein the previously transmitted data packet and the retransmission data packet are derived from common data; and

obtaining the common data based on the information related to the previously transmitted data packet, wherein the previously transmitted data packet and the retransmission data packet are associated with a sequence of data packets comprising a first data packet and wherein the first data packet does not have a control packet associated therewith.

2. The method of claim 1, wherein the previously transmitted data packet is sent on a transmission medium shared by a plurality of user equipment, and the previously transmitted data packet comprises identification information associated with a particular user equipment.

3. The method of claim 1, further comprising transmitting an acknowledgement message if the complete version of the previously transmitted data packet is retrieved successfully.

4. The method of claim 3, further wherein transmitting the acknowledgement message comprises transmitting an acknowledgement packet in an uplink channel.

5. The method of claim 4, wherein the uplink channel is a High-Speed Downlink Packet Access (HSDPA) uplink channel.

6. The method of claim 1, wherein the information related to the previously transmitted data packet comprises a pointer that identifies a location of the previously transmitted data packet in the sequence of data packets.

7. The method of claim 6, wherein the location of the previously transmitted data packet in the sequence of data packets is a temporal location.

8. The method of claim 6, wherein the pointer comprises an offset of the relative location from the retransmission data packet to identify the previously transmitted data packet.

9. The method of claim 8, wherein the offset comprises a plurality of bits.

10. The method of claim 1, wherein the control packet comprises a slot number.

11. The method of claim 1, wherein the control packet comprises a modulation scheme.

12. The method of claim 1, wherein the retransmission data packet is identical to the previously transmitted data packet.

13. The method of claim 1, wherein the retransmission data packet is of a particular block size, and the control packet further comprises a transport block size that specifies the particular block size of the retransmission data packet.

14. The method of claim 13, wherein the transport block size is chosen from four different possible block sizes.

15. The method of claim 1, wherein the control packet further comprises a retransmission indicator identifying a number of retransmission attempts associated with the retransmission data packet.

16. The method of claim 1, wherein the control packet is transmitted on a High Speed Downlink Shared Control Channel (HS-SCCH) channel.

17. The method of claim 1, further comprising receiving a command for enabling a discontinuous reception (DRX) mode.

18. The method of claim 1, further comprising receiving a command for enabling a discontinuous transmission (DTX) mode.

19. An apparatus for wireless communications comprising:

means for receiving a control packet comprising information related to a previously transmitted data packet;

means for receiving a retransmission data packet, wherein the previously transmitted data packet and the retransmission data packet are derived from common data; and

,

means for obtaining the common data based on the information related to the previously transmitted data packet, wherein the previously transmitted data packet and the retransmission data packet are associated with a sequence of data packets comprising a first data packet and wherein the first data packet does not have a control packet associated therewith.

20. The apparatus of claim 19, wherein the previously transmitted data packet is sent on a transmission medium shared by a plurality of user equipment, and the previously transmitted data packet comprises identification information associated with a particular user equipment.

21. The apparatus of claim 19, further comprising means for transmitting an acknowledgement message if the complete version of the previously transmitted data packet is retrieved successfully.

22. The apparatus of claim 21, wherein the means for transmitting the acknowledgement message comprises means for transmitting an acknowledgement packet in an uplink channel.

23. The apparatus of claim 22, wherein the uplink channel is a High-Speed Downlink Packet Access (HSDPA) uplink channel.

24. The apparatus of claim 19, wherein the information related to the previously transmitted data packet comprises a pointer that identifies a location of the previously transmitted data packet in the sequence of data packets.

25. The apparatus of claim 24, wherein the location of the previously transmitted data packet in the sequence of data packets is a temporal location.

26. The apparatus of claim 24, wherein the pointer comprises an offset of the relative location from the retransmission data packet to identify the previously transmitted data packet.

27. The apparatus of claim 26, wherein the offset comprises a plurality of bits.

28. The apparatus of claim 19, wherein the control information comprises a slot number.

29. The apparatus of claim 19, wherein the control information comprises a modulation scheme.

30. The apparatus of claim 19, wherein the retransmission data packet is identical to the previously transmitted data packet.

31. The apparatus of claim 19, wherein the retransmission data packet is of a particular block size, and the control packet further comprises a transport block size that specifies the particular block size of the retransmission data packet.

32. The apparatus of claim 31, wherein the transport block size is chosen from four different possible block sizes.

33. The apparatus of claim 19, wherein the control packet further comprises a retransmission indicator identifying a number of retransmission attempts associated with the retransmission data packet.

34. The apparatus of claim 19, wherein the control packet is transmitted on a High Speed Downlink Shared Control Channel (HS-SCCH) channel.

35. The apparatus of claim 19, further comprising means for receiving a command for enabling a discontinuous reception (DRX) mode.

36. The apparatus of claim 19, further comprising means for receiving a command for enabling a discontinuous transmission (DTX) mode.

37. An apparatus for wireless communications comprising:

a demodulator configured to receive a control packet comprising information related to a previously transmitted data packet; and

a retransmission data packet, wherein the previously transmitted data packet and the retransmission data packet are derived from common data; and

,

a reception data processor coupled to the demodulator, wherein the reception data processor is configured to obtain the common data based on the information related to the previously transmitted data packet, wherein the previously transmitted data packet and the retransmission data packet are associated with a sequence of data packets comprising a first data packet and wherein the first data packet does not have a control packet associated therewith.

38. The apparatus of claim 37, wherein the previously transmitted data packet is sent on a transmission medium shared by a plurality of user equipment, and the previously transmitted data packet comprises identification information associated with a particular user equipment.

39. The apparatus of claim 37, further comprising a transmitter configured to transmit an acknowledgement message if the complete version of the previously transmitted data packet is retrieved successfully.

40. The apparatus of claim 39, wherein the transmitter transmits an acknowledgement packet in an uplink channel.

41. The apparatus of claim 40, wherein the uplink channel is a High-Speed Downlink Packet Access (HSDPA) uplink channel.

42. The apparatus of claim 37, wherein the information related to the previously transmitted data packet comprises a pointer that identifies a location of the previously transmitted data packet in the sequence of data packets.

43. The apparatus of claim 42, wherein the location of the previously transmitted data packet in the sequence of data packets is a temporal location.

44. The apparatus of claim 42, wherein the pointer comprises an offset of the relative location from the retransmission data packet to identify the previously transmitted data packet.

45. The apparatus of claim 44, wherein the offset comprises a plurality of bits.

46. The apparatus of claim 37, wherein the control information comprises a slot number.

47. The apparatus of claim 37, wherein the control information comprises a modulation scheme.

48. The apparatus of claim 37, wherein the retransmission data packet is identical to the previously transmitted data packet.

49. The apparatus of claim 37, wherein the retransmission data packet is of a particular block size, and the control packet further comprises a transport block size that specifies the particular block size of the retransmission data packet.

50. The apparatus of claim 49, wherein the transport block size is chosen from four different possible block sizes.

51. The apparatus of claim 37, wherein the control packet further comprises a retransmission indicator identifying a number of retransmission attempts associated with the retransmission data packet.

52. The apparatus of claim 37, wherein the control packet is transmitted on a High Speed Downlink Shared Control Channel (HS-SCCH) channel.

53. The apparatus of claim 37, wherein the demodulator is further configured to receive a command for enabling a discontinuous reception (DRX) mode.

54. The apparatus of claim 37, the demodulator is further configured to receive a command for enabling a discontinuous transmission (DTX) mode.

55. A computer-program product for wireless communications comprising:

a machine-readable medium comprising instructions executable by a controller to;

receive a retransmission data packet, wherein the previously transmitted data packet and the retransmission data packet are derived from common data; and

obtain the common data based on the information related to the previously transmitted data packet, wherein the previously transmitted data packet and the retransmission data packet are associated with a sequence of data packets comprising a first data packet and wherein the first data packet does not have a control packet associated therewith.

56. A user equipment comprising:

a demodulator configured to receive a control packet comprising information related to a previously transmitted data packet and a retransmission data packet, wherein the previously transmitted data packet and the retransmission data packet are derived from common data;

a reception data processor coupled to the demodulator, wherein the reception data processor is configured to obtain the common data based on the information related to the previously transmitted data packet, wherein the previously transmitted data packet and the retransmission data packet are associated with a sequence of data packets comprising a first data packet and wherein the first data packet does not have a control packet associated therewith; and

,

a transducer coupled to the reception data processor, wherein the transducer is configured to produce audio based on the common data.

57. A method for wireless communications comprising:

transmitting a control packet having information related to a previously transmitted data packet, the information not having been transmitted when the previously transmitted packet was transmitted; and

transmitting a retransmission data packet, wherein the previously transmitted data packet and the retransmission data packet are derived from common data.

58. The method of claim 57, further comprising transmitting a second retransmission data packet located temporally between the retransmission data packet and the previously transmitted data packet, wherein the second retransmission data packet also is derived from the common data.

59. The method of claim 58, wherein the information is also related to the second retransmission packet.

60. The method of claim 57, wherein the previously transmitted data packet is sent on a transmission medium shared by a plurality of user equipment, and the previously transmitted data packet comprises identification information associated with a particular user equipment.

61. The method of claim 57, wherein the retransmission data packet is transmitted after a predetermined time period from the transmission of the previously transmitted data packet and an acknowledgement message is not received.

62. The method of claim 57, wherein the information related to the previously transmitted data packet comprises a pointer that identifies a location of the previously transmitted data packet in a sequence of data packets.

63. The method of claim 62, wherein the location of the previously transmitted data packet in the sequence of data packets is a temporal location.

64. The method of claim 62, wherein the pointer comprises an offset of the relative location from the retransmission data packet to identify the previously transmitted data packet.

65. The method of claim 64, wherein the offset comprises a plurality of bits.

66. The method of claim 57, wherein the control packet comprises a slot number.

67. The method of claim 57, wherein the control packet comprises a modulation scheme.

68. The method of claim 57, wherein the retransmission data packet is identical to the previously transmitted data packet.

69. The method of claim 57, wherein the retransmission data packet is of a particular block size, and the control packet further comprises a transport block size that specifies the particular block size of the retransmission data packet.

70. The method of claim 69, wherein the transport block size is chosen from four different possible block sizes.

71. The method of claim 57, wherein the control packet further comprises a retransmission indicator identifying a number of retransmission attempts associated with the retransmission data packet.

72. The method of claim 57, wherein the control packet is transmitted on a High Speed Downlink Shared Control Channel (HS-SCCH) channel.

73. The method of claim 57, further comprising transmitting a command for enabling a discontinuous reception (DRX) mode.

74. The method of claim 57, further comprising transmitting a command for enabling a discontinuous transmission (DTX) mode.

75. An apparatus for wireless communications comprising:

means for transmitting a control packet having information related to a previously transmitted data packet, the information not having been transmitted when the previously transmitted packet was transmitted; and

means for transmitting a retransmission data packet, wherein the previously transmitted data packet and the retransmission data packet are derived from common data.

76. The apparatus of claim 75, further comprising means for transmitting a second retransmission data packet located temporally between the retransmission data packet and the previously transmitted data packet, wherein the second retransmission data packet also is derived from the common data.

77. The apparatus of claim 76, wherein the information is also related to the second retransmission packet.

78. The apparatus of claim 75, wherein the previously transmitted data packet is sent on a transmission medium shared by a plurality of user equipment, and the previously transmitted data packet comprises identification information associated with a particular user equipment.

79. The apparatus of claim 75, wherein the retransmission data packet is transmitted after a predetermined time period from the transmission of the previously transmitted data packet and an acknowledgement message is not received.

80. The apparatus of claim 75, wherein the information related to the previously transmitted data packet comprises a pointer that identifies a location of the previously transmitted data packet in a sequence of data packets.

81. The apparatus of claim 80, wherein the location of the previously transmitted data packet in the sequence of data packets is a temporal location.

82. The apparatus of claim 80, wherein the pointer comprises an offset of the relative location from the retransmission data packet to identify the previously transmitted data packet.

83. The apparatus of claim 82, wherein the offset comprises a plurality of bits.

84. The apparatus of claim 75, wherein the control packet comprises a slot number.

85. The apparatus of claim 75, wherein the control packet comprises a modulation scheme.

86. The apparatus of claim 75, wherein the retransmission data packet is identical to the previously transmitted data packet.

87. The apparatus of claim 75, wherein the retransmission data packet is of a particular block size, and the control packet further comprises a transport block size that specifies the particular block size of the retransmission data packet.

88. The apparatus of claim 87, wherein the transport block size is chosen from four different possible block sizes.

89. The apparatus of claim 75, wherein the control packet further comprises a retransmission indicator identifying a number of retransmission attempts associated with the retransmission data packet.

90. The apparatus of claim 75, wherein the control packet is transmitted on a High Speed Downlink Shared Control Channel (HS-SCCH) channel.

91. The apparatus of claim 75, further comprising means for transmitting a command for enabling a discontinuous reception (DRX) mode.

92. The apparatus of claim 75, further comprising means for transmitting a command for enabling a discontinuous transmission (DTX) mode.

93. An apparatus for wireless communications comprising:

a transmitter configured to transmit;

a control packet having information related to a previously transmitted data packet, the information not having been transmitted when the previously transmitted packet was transmitted; and

a retransmission data packet, wherein the previously transmitted data packet and the retransmission data packet are derived from common data.

94. The apparatus of claim 93, wherein the transmitter is further configured to transmit a second retransmission data packet located temporally between the retransmission data packet and the previously transmitted data packet, wherein the second retransmission data packet also is derived from the common data.

95. The apparatus of claim 94, wherein the information is also related to the second retransmission packet.

96. The apparatus of claim 93, wherein the previously transmitted data packet is sent on a transmission medium shared by a plurality of user equipment, and the previously transmitted data packet comprises identification information associated with a particular user equipment.

97. The apparatus of claim 93, wherein the retransmission data packet is transmitted after a predetermined time period from the transmission of the previously transmitted data packet and an acknowledgement message is not received.

98. The apparatus of claim 93, wherein the information related to the previously transmitted data packet comprises a pointer that identifies a location of the previously transmitted data packet in a sequence of data packets.

99. The apparatus of claim 98, wherein the location of the previously transmitted data packet in the sequence of data packets is a temporal location.

100. The apparatus of claim 98, wherein the pointer comprises an offset of the relative location from the retransmission data packet to identify the previously transmitted data packet.

101. The apparatus of claim 100, wherein the offset comprises a plurality of bits.

102. The apparatus of claim 93, wherein the control packet comprises a slot number.

103. The apparatus of claim 93, wherein the control packet comprises a modulation scheme.

104. The apparatus of claim 93, wherein the retransmission data packet is identical to the previously transmitted data packet.

105. The apparatus of claim 93, wherein the retransmission data packet is of a particular block size, and the control packet further comprises a transport block size that specifies the particular block size of the retransmission data packet.

106. The apparatus of claim 105, wherein the transport block size is chosen from four different possible block sizes.

107. The apparatus of claim 93, wherein the control packet further comprises a retransmission indicator identifying a number of retransmission attempts associated with the retransmission data packet.

108. The apparatus of claim 93, wherein the control packet is transmitted on a High Speed Downlink Shared Control Channel (HS-SCCH) channel.

109. The apparatus of claim 93, further comprising transmitting a command for enabling a discontinuous reception (DRX) mode.

110. The apparatus of claim 93, further comprising transmitting a command for enabling a discontinuous transmission (DTX) mode.

111. A computer-program product for wireless communications comprising:

a machine-readable medium comprising instructions executable by a controller to;

transmit a control packet having information related to a previously transmitted data packet, the information not having been transmitted when the previously transmitted packet was transmitted; and

,

transmit a retransmission data packet, wherein the previously transmitted data packet and the retransmission data packet are derived from common data.

112. A node B comprising:

an antenna; and

a transmitter configured to transmit, via the antenna;

a control packet with the antenna having information related to a previously transmitted data packet, the information not having been transmitted when the previously transmitted packet was transmitted; and

a retransmission data packet with the antenna, wherein the previously transmitted data packet and the retransmission data packet are derived from common data.