Slot structure for radio communications system

• US 7,512,109 B2
• Filed: 09/30/2002
• Issued: 03/31/2009
• Est. Priority Date: 09/29/2000
• Status: Expired due to Fees

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Petrus, Paul, Sankaran, Sundar G., Trott, Mitchell D., Dogan, Mithat C.
• Primary Examiner(s): VU, THONG H
• Application Number:
  US10/262,108
• Publication Number:
  US 20030156594A1
• Time in Patent Office: 2,374 Days
• Field of Search: 370340-348, 370/252, 370/335, 370/322, 370/236, 370/498, 375231-348, 709/228, 455/434
• US Class Current: 370/347
• CPC Class Codes: H04B 7/0851 using training sequences or error signal minimizing error signal H04B7/0854
• CPC Class Codes: H04B 7/2656 for structure of frame, burst
• CPC Class Codes: H04B 7/2659 for data rate control
• CPC Class Codes: H04L 27/18 Phase-modulated carrier systems, i.e. using phase-shift keying H04L27/32 takes precedence

Abstract

In one embodiment, the present invention includes a slot in a repeating time division frame with a first training sequence, an information sequence after the first training sequence, and a second training sequence after the information sequence. In some embodiments either the first or the second training sequences indicates a type for the information sequence, such as a random access channel message and a traffic channel message, a configuration message, a channel assignment message, or a data traffic message.

Claims

1. A radio of a radio communications system having a transceiver for communicating with other radios of the radio communications system over radio channels using a repeating time division frame, the frame having a plurality of slots, at least one of the slots comprising:

a first training sequence for use in receiving an information sequence;

an information sequence after the first training sequence carrying information from the radio; and

a second training sequence after the information sequence for use in receiving the information sequence, the second training sequence also being a control sequence.

2. The radio of claim 1, further comprising a control sequence before the information sequence.

3. The radio of claim 2, wherein the control sequence indicates one of a plurality of different transmission modes for the information sequence.

4. The radio of claim 3, wherein the transmission mode includes at least one of a modulation format and an encoding format.

5. The radio of claim 3, wherein the plurality of different transmission modes correspond to different data rates.

6. The radio of claim 1, wherein the control sequence is immediately after the first training sequence.

7. The radio of claim 1, wherein the control sequence comprises a fast associated control channel sequence.

8. The radio of claim 6, wherein the control sequence comprises a fast associated control channel sequence.

9. The radio of claim 1, wherein the information sequence is continuous, and wherein the second training sequence is adjacent to and after the information sequence.

10. The radio of claim 1, wherein one of the first and the second training sequences indicates a type for the information sequence.

11. The radio of claim 10, wherein the type for the information sequence is selected from one of a random access channel message, and a traffic channel message.

12. The radio of claim 11, wherein the training sequence is selected from among different sets of training sequences, each set corresponding to a type for the information sequence.

13. The radio of claim 12, wherein the training sequences of each set are orthogonal to the other training sequences of the set.

14. The radio of claim 10, wherein the type for the information sequence is selected from one of a configuration message, a channel assignment message, and a data traffic message.

15. A method comprising:

sending a first training sequence within a slot of a repeating time division frame, the first training sequence being for use in receiving an information sequence;

sending an information sequence carrying information to a receiver within the slot after the first training sequence; and

sending a second training sequence within the slot after the information sequence for use in receiving the information sequence, the second training sequence also being a control sequence.

16. The method of claim 15, further comprising sending a control sequence before the information sequence.

17. The method of claim 16, wherein the control sequence indicates one of a plurality of different transmission modes for the information sequence.

18. The method of claim 17, wherein the plurality of different transmission modes correspond to different data rates.

19. The method of claim 16, wherein the control sequence comprises a fast associated control channel sequence.

20. The method of claim 15, wherein the information sequence is continuous, and wherein the second training sequence is adjacent to and after the information sequence.

21. The method of claim 15, wherein one of the first and the second training sequences indicates a type for the information sequence.

22. The method of claim 21, wherein the type for the information sequence is selected from one of a random access channel message, a configuration message, a channel assignment message, and a traffic channel message.

23. The method of claim 21, wherein the training sequence is selected from among different sets of training sequences, each set corresponding to a type for the information sequence.

24. An apparatus comprising:

a processor to construct a burst for transmission in a slot of a repeating time division frame, the burst having a first training sequence for use in receiving an information sequence, the information sequence after the first training sequence carrying information from a transmitter of the apparatus and a second training sequence after the information sequence for use in receiving the information sequence, the second training sequence also being a control sequence; and

the transmitter for sending the burst constructed by the processor.

25. The apparatus of claim 24, wherein the slot further has a control sequence before the information sequence.

26. The apparatus of claim 25, wherein the control sequence indicates one of a plurality of different transmission modes for the information sequence.

27. The apparatus of claim 24, wherein the information sequence is continuous, and wherein the second training sequence is adjacent to and after the information sequence.

28. The apparatus of claim 27, wherein the control sequence indicates one of a plurality of different transmission modes for the information sequence.

29. The apparatus of claim 24, wherein one of the first and the second training sequences indicates a type for the information sequence.

30. A radio of a radio communications system having a transceiver for communicating with other radios of the radio communications system over radio channels using a repeating time division frame, the frame having a plurality of slots, at least one of the slots comprising:

a first training sequence for use by the other radios in receiving an information sequence;

an information sequence after the first training sequence carrying information from the radio; and

a second training sequence for use in receiving the information sequence,

wherein one of the first and the second training sequences indicates a type for the information sequence.

31. The radio of claim 30, wherein the first training sequence indicates the type.

32. The radio of claim 30, wherein the type for the information sequence is selected from one of a random access channel message and a traffic channel message.

33. The radio of claim 30, wherein the type for the information sequence is selected from one of a configuration message, a channel assignment message, and a data traffic message.

34. The radio of claim 33, wherein the training sequence is selected from among different sets of training sequences, each set corresponding to a type for the information sequence.

35. The radio of claim 34, wherein the training sequences of each set are orthogonal to the other training sequences of the set.

36. The radio of claim 30, wherein the second training sequence comprises a control sequence.

37. The radio of claim 36, wherein the control sequence comprises a fast associated control channel sequence.

38. The radio of claim 37, wherein the control sequence indicates one of a plurality of different transmission modes for the information sequence.

39. The radio of claim 38, wherein the transmission mode includes at least one of a modulation format and an encoding format.

40. A method comprising;

sending a first training sequence in a slot of a repeating time division frame for use in receiving an information sequence;

sending an information sequence in the slot after the first training sequence carrying information to a receiver; and

sending a second training sequence in the slot for use in receiving the information sequence,

wherein one of the first and the second training sequences indicates a type for the information sequence.

41. The method of claim 40, wherein the first training sequence indicates the type.

42. The method of claim 40, wherein the type for the information sequence is selected from one of a random access channel message, a configuration message, a channel assignment message, and a traffic channel message.

43. The method of claim 40, wherein the training sequence is selected from among different sets of training sequences, each set corresponding to a type for the information sequence.

44. The method of claim 40, wherein the second training sequence comprises a control sequence.

45. The method of claim 44, wherein the control sequence indicates one of a plurality of different transmission modes for the information sequence.

46. The method of claim 45, wherein the transmission mode includes at least one of a modulation format and an encoding format.

47. An apparatus comprising;

means for sending a first training sequence in a slot of a repeating time division frame for use in receiving an information sequence;

means for sending an information sequence in the slot after the first training sequence, the information sequence carrying information from the means for sending the information sequence; and

means for sending a second training sequence in the slot for use in receiving the information sequence,

wherein one of the first and the second training sequences indicates a type for the information sequence.

48. The apparatus of claim 47, wherein the first training sequence indicates the type.

49. The apparatus of claim 47, wherein the type for the information sequence is selected from one of a random access channel message, a configuration message, a channel assignment message, and a traffic channel message.

50. The apparatus of claim 47, wherein the training sequence is selected from among different sets of training sequences, each set corresponding to a type for the information sequence.

51. The apparatus of claim 47, wherein the second training sequence comprises a control sequence.

52. The apparatus of claim 51, wherein the control sequence indicates one of a plurality of different transmission modes for the information sequence.

53. The apparatus of claim 52, wherein the transmission mode includes at least one of a modulation format and an encoding format.

54. An apparatus comprising;

a transmitter to send a first training sequence in a slot of a repeating time division frame for use in receiving an information sequence, an information sequence carrying information from the transmitter in the slot after the first training sequence, and a second training sequence in the slot for use in receiving the information sequence; and

a processor to select a training sequence as one of the first and the second training sequences to indicate a type for the information sequence.

55. The apparatus of claim 54, wherein the first training sequence indicates the type.

56. The apparatus of claim 54, wherein the processor selects a training sequence for the type of the information sequence from one of a random access channel message, a configuration message, a channel assignment message, and a traffic channel message.

57. The apparatus of claim 54, wherein the processor selects the training sequence from among different sets of training sequences, each set corresponding to a type for the information sequence.

58. The apparatus of claim 54, wherein the second training sequence comprises a control sequence.

59. The apparatus of claim 58, wherein the control sequence indicates one of a plurality of different transmission modes for the information sequence.

60. The apparatus of claim 59, wherein the transmission mode includes at least one of a modulation format and an encoding format.