METHODS AND APPARATUS FOR SPECIAL BURST TRANSMISSIONS TO REDUCE UPLINK AND DOWNLINK INTERFERENCE FOR TD-SCDMA SYSTEMS

• US 20140247814A1
• Filed: 05/19/2011
• Published: 09/04/2014
• Est. Priority Date: 05/19/2011
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Zhang, Jianqiang, Guo, Jiming, Fan, Mingxi
• Application Number:
  US14/112,827
• Publication Number:
  US 20140247814A1
• Time in Patent Office: Days
• US Class Current: 370/336
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 52/04 TPC
• CPC Class Codes: H04W 52/325 Power control of control or pilot channels
• CPC Class Codes: H04W 52/58 Format of the TPC bits

Abstract

A method and apparatus in wireless communications is provided. The method may include determining an occurrence of a special burst time slot, and obtaining one or more control symbols located in a first data field and a second data field of the special burst time slot.

Claims

1. A method in wireless communications, comprising:

determining an occurrence of a special burst time slot; and

obtaining one or more control symbols located in a first data field and a second data field of the special burst time slot.

2. The method of claim 1, wherein the one or more control symbols comprise at least one of a Synchronization Shift (SS) command and a Transmit Power Control (TPC) command.

3. The method of claim 1, wherein the one or more control symbols are located in the first data field and the second data field with alternating positive and negative signs.

4. The method of claim 1, wherein the obtaining further comprises receiving, at a user equipment (UE), the occurrence of the special burst time slot;

and

further comprising generating a downlink power control command based on the obtained one or more control symbols.

5. The method of claim 1, wherein the obtaining further comprises receiving, at a UE, the occurrence of the special burst time slot, and wherein the one or more control symbols comprise a SS command;

and

further comprising maintaining uplink synchronization and downlink synchronization based on the obtained SS command.

6. The method of claim 1, wherein the obtaining comprises:

receiving, at a Node B, the occurrence of the special burst time slot, and wherein the one or more control symbols comprise a TPC command; and

further comprising generating an uplink power control command based on the obtained TPC command.

7. The method of claim 1, wherein the one or more control symbols comprise a TPC command, wherein the obtaining comprises populating, at a UE, at least a portion of the first data field and at least a portion of the second data field with the TPC command;

and

further comprising transmitting the special burst time slot.

8. The method of claim 7, wherein the transmitting further comprises transmitting the special burst time slot at a transmit power that is reduced in comparison to a transmit power used for a non-special burst time slot.

9. The method of claim 1, wherein the one or more control symbols comprise a SS command and a TPC command, wherein the obtaining comprises populating, at a Node B, at least a portion of the first data field with the SS command and populating at least a portion of the second data field with the TPC command;

and

further comprising transmitting the special burst time slot.

10. The method of claim 1, wherein the at least one special burst time slot comprises a first transport format combination indicator (TFCI) data field, and wherein a portion of the first and second data field that does not include the one or more control symbols is populated with zeros.

11. An apparatus for wireless communications, comprising:

at least one processor configured to;

determine an occurrence of a special burst time slot; and

obtain one or more control symbols located in a first data field and a second data field of the special burst time slot.

12. The apparatus of claim 11, wherein the one or more control symbols comprise at least one of a Synchronization Shift (SS) command and a Transmit Power Control (TPC) command.

13. The apparatus of claim 11, wherein the one or more control symbols are located in the first data field and the second data field with alternating positive and negative signs.

14. The apparatus of claim 11, wherein the at least one processor is further configured to:

receive, at a user equipment (UE), the occurrence of the special burst time slot; and

generate a downlink power control command based on the obtained one or more control symbols.

15. The apparatus of claim 11, wherein the at least one processor is further configured to:

receive, at a UE, the occurrence of the special burst time slot, and wherein the one or more control symbols comprise a SS command; and

maintain uplink synchronization and downlink synchronization based on the obtained SS command.

16. The apparatus of claim 11, wherein the at least one processor is further configured to:

receive, at a Node B, the occurrence of the special burst time slot, and wherein the one or more control symbols comprise a TPC command; and

generate an uplink power control command based on the obtained TPC command.

17. The apparatus of claim 11, wherein the one or more control symbols comprise a TPC command, and wherein the at least one processor is further configured to:

populate, at a UE, at least a portion of the first data field and at least a portion of the second data field with the TPC command; and

transmit the special burst time slot.

18. The apparatus of claim 17, wherein the transmitting further comprises transmitting the special burst time slot at a transmit power that is reduced in comparison to a transmit power used for a non-special burst time slot.

19. The apparatus of claim 11, wherein the one or more control symbols comprise a SS command and a TPC command, and

wherein the at least one processor is further configured to:

populate, at a Node B, at least a portion of the first data field with the SS command and populating at least a portion of the second data field with the TPC command; and

transmit the special burst time slot.

20. The apparatus of claim 11, wherein the at least one special burst time slot comprises a first transport format combination indicator (TFCI) data field, and wherein a portion of the first and second data field that does not include the one or more control symbols is populated with zeros.

21. A computer program product, comprising:

a computer-readable medium comprising code for;

determining an occurrence of a special burst time slot; and

obtaining one or more control symbols located in a first data field and a second data field of the special burst time slot.

22. The computer program product of claim 21, wherein the one or more control symbols comprise at least one of a Synchronization Shift (SS) command and a Transmit Power Control (TPC) command.

23. The computer program product of claim 21, wherein the one or more control symbols are located in the first data field and the second data field with alternating positive and negative signs.

24. The computer program product of claim 21, wherein the obtaining further comprises receiving, at a user equipment (UE), the occurrence of the special burst time slot;

and

further comprising generating a downlink power control command based on the obtained one or more control symbols.

25. The computer program product of claim 21, wherein the obtaining further comprises receiving, at a UE, the occurrence of the special burst time slot, and wherein the one or more control symbols comprise a SS command;

and

further comprising maintaining uplink synchronization and downlink synchronization based on the obtained SS command.

26. The computer program product of claim 21, wherein the obtaining comprises:

receiving, at a Node B, the occurrence of the special burst time slot, and wherein the one or more control symbols comprise a TPC command; and

further comprising generating an uplink power control command based on the obtained TPC command.

27. The computer program product of claim 21, wherein the one or more control symbols comprise a TPC command, wherein the obtaining comprises populating, at a UE, at least a portion of the first data field and at least a portion of the second data field with the TPC command;

and

further comprising transmitting the special burst time slot.

28. The computer program product of claim 27, wherein the transmitting further comprises transmitting the special burst time slot at a transmit power that is reduced in comparison to a transmit power used for a non-special burst time slot.

29. The computer program product of claim 21, wherein the one or more control symbols comprise a SS command and a TPC command, wherein the obtaining comprises populating, at a Node B, at least a portion of the first data field with the SS command and populating at least a portion of the second data field with the TPC command;

and

further comprising transmitting the special burst time slot.

30. The computer program product of claim 21, wherein the at least one special burst time slot comprises a first transport format combination indicator (TFCI) data field, and wherein a portion of the first and second data field that does not include the one or more control symbols is populated with zeros.

31. An apparatus for wireless communications, comprising:

means for determining an occurrence of a special burst time slot; and

means for obtaining one or more control symbols located in a first data field and a second data field of the special burst time slot.

32. The apparatus of claim 31, wherein the one or more control symbols comprise at least one of a Synchronization Shift (SS) command and a Transmit Power Control (TPC) command.

33. The apparatus of claim 31, wherein the one or more control symbols are located in the first data field and the second data field with alternating positive and negative signs.

34. The apparatus of claim 31, wherein the means for obtaining further comprises means for receiving, at a user equipment (UE), the occurrence of the special burst time slot;

and

further comprising means for generating a downlink power control command based on the obtained one or more control symbols.

35. The apparatus of claim 31, wherein the means for obtaining further comprises means for receiving, at a UE, the occurrence of the special burst time slot, and wherein the one or more control symbols comprise a SS command;

and

further comprising means for maintaining uplink synchronization and downlink synchronization based on the obtained SS command.

36. The apparatus of claim 31, wherein the means for obtaining comprises means for receiving, at a Node B, the occurrence of the special burst time slot, and wherein the one or more control symbols comprise a TPC command;

and

further comprising means for generating an uplink power control command based on the obtained TPC command.

37. The apparatus of claim 31, wherein the one or more control symbols comprise a TPC command, wherein the means for obtaining comprises means for populating, at a UE, at least a portion of the first data field and at least a portion of the second data field with the TPC command;

and

further comprising means for transmitting the special burst time slot.

38. The apparatus of claim 37, wherein the means for transmitting further comprises means for transmitting the special burst time slot at a transmit power that is reduced in comparison to a transmit power used for a non-special burst time slot.

39. The apparatus of claim 31, wherein the one or more control symbols comprise a SS command and a TPC command, wherein the means for obtaining comprises means for populating, at a Node B, at least a portion of the first data field with the SS command and populating at least a portion of the second data field with the TPC command;

and

further comprising means for transmitting the special burst time slot.

40. The apparatus of claim 31, wherein the at least one special burst time slot comprises a first transport format combination indicator (TFCI) data field, and wherein a portion of the first and second data field that does not include the one or more control symbols is populated with zeros.