Slot structure for radio communications system
View Patent ↗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.
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.