Method and Apparatus for Relaxing Uplink and Downlink RF Switching

• US 20120269161A1
• Filed: 03/31/2010
• Published: 10/25/2012
• Est. Priority Date: 11/13/2009
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Chin, Tom, Shi, Guangming, Lee, Kuo-Chun
• Application Number:
  US13/384,195
• Publication Number:
  US 20120269161A1
• Time in Patent Office: Days
• US Class Current: 370/330
• CPC Class Codes: H04B 7/2618 using hybrid code-time division multiple access [CDMA-TDMA]
• CPC Class Codes: H04L 5/0005 Time-frequency
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/1484 operating bytewise
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method and apparatus are disclosed to enable user equipment in a TD-SCDMA network to reduce or eliminate RF signal leakage from a transmitter to a receiver. In an aspect of the disclosure, a method includes receiving an assignment of an uplink time slot of a sub-frame and receiving an assignment of a downlink time slot of the sub-frame, wherein the uplink time slot is prevented from being sequential to the downlink time slot. In another aspect of the disclosure, a method includes receiving an assignment of an uplink time slot of a sub-frame associated with a first carrier frequency and receiving an assignment of a down-link time slot of a sub-frame associated with a second carrier frequency, wherein the first carrier frequency is prevented from being the same frequency as the second carrier frequency when the uplink time slot is sequential to the downlink time slot.

Claims

1. A method used in a TD-SCDMA communication system, the method comprising:

receiving an assignment of an uplink time slot of a sub-frame; and

receiving an assignment of a downlink time slot of the sub-frame,

wherein the uplink time slot is prevented from being sequential to the downlink time slot.

2. The method of claim 1, wherein the uplink time slot and the downlink time slot are utilized for an RF leakage-sensitive application.

3. The method of claim 2, wherein the RF leakage-sensitive application comprises a voice call.

4. The method of claim 1,

wherein the first time slot is within a first carrier frequency, and the second time slot is within a second carrier frequency, and

wherein the first carrier frequency is the same carrier frequency as the second carrier frequency.

5. The method of claim 4, wherein the first time slot corresponds to at least one uplink channel for the mobile terminal, and the second time slot corresponds to at least one downlink channel for the mobile terminal.

6. A method used in a TD-SCDMA communication system, the method comprising:

receiving an assignment of an uplink time slot of a sub-frame associated with a first carrier frequency; and

receiving an assignment of a downlink time slot of a sub-frame associated with a second carrier frequency,

wherein the first carrier frequency is prevented from being the same frequency as the second carrier frequency when the uplink time slot is sequential to the downlink time slot.

7. The method of claim 6, wherein the uplink time slot and the downlink time slot are utilized for an RF leakage-sensitive application.

8. The method of claim 7, wherein the RF leakage-sensitive application comprises a voice call.

9. The method of claim 6, wherein the first time slot is sequential to the second time slot.

10. The method of claim 9, wherein the first time slot corresponds to at least one uplink channel for the mobile terminal, and the second time slot corresponds to at least one downlink channel for the mobile terminal.

11. An apparatus for wireless communication used in a TD-SCDMA system, the apparatus comprising:

means for receiving an assignment of an uplink time slot of a sub-frame;

means for receiving an assignment of a downlink time slot of the sub-frame; and

means for preventing the uplink time slot from being sequential to the downlink time slot.

12. The apparatus of claim 11, wherein the uplink time slot and the downlink time slot are utilized for an RF leakage-sensitive application.

13. The apparatus of claim 12, wherein the RF leakage-sensitive application comprises a voice call.

14. The apparatus of claim 11,

wherein the first time slot is within a first carrier frequency, and the second time slot is within a second carrier frequency, and

wherein the first carrier frequency is the same carrier frequency as the second carrier frequency.

15. The apparatus of claim 14, wherein the first time slot corresponds to at least one uplink channel for the mobile terminal, and the second time slot corresponds to at least one downlink channel for the mobile terminal.

16. An apparatus for wireless communication used in a TD-SCDMA system, the apparatus comprising:

means for receiving an assignment of an uplink time slot of a sub-frame associated with a first carrier frequency;

means for receiving an assignment of a downlink time slot of a sub-frame associated with a second carrier frequency; and

means for preventing the first carrier frequency from being the same frequency as the second carrier frequency when the uplink time slot is sequential to the downlink time slot.

17. The apparatus of claim 16, wherein the uplink time slot and the downlink time slot are utilized for an RF leakage-sensitive application.

18. The apparatus of claim 17, wherein the RF leakage-sensitive application comprises a voice call.

19. The apparatus of claim 16, wherein the first time slot is sequential to the second time slot.

20. The apparatus of claim 19, wherein the first time slot corresponds to at least one uplink channel for the mobile terminal, and the second time slot corresponds to at least one downlink channel for the mobile terminal.

21. A computer program product used in a TD-SCDMA wireless communication system, comprising:

a computer-readable medium comprising code for;

receiving an assignment of an uplink time slot of a sub-frame;

receiving an assignment of a downlink time slot of the sub-frame; and

preventing the uplink time slot from being sequential to the downlink time slot.

22. The computer program product of claim 21, wherein the uplink time slot and the downlink time slot are utilized for an RF leakage-sensitive application.

23. The computer program product of claim 22, wherein the RF leakage-sensitive application comprises a voice call.

24. The computer program product of claim 21,

wherein the first time slot is within a first carrier frequency, and the second time slot is within a second carrier frequency, and

wherein the first carrier frequency is the same carrier frequency as the second carrier frequency.

25. The computer program product of claim 24, wherein the first time slot corresponds to at least one uplink channel for the mobile terminal, and the second time slot corresponds to at least one downlink channel for the mobile terminal.

26. A computer program product used in a TD-SCDMA wireless communication system, comprising:

a computer-readable medium comprising code for;

receiving an assignment of an uplink time slot of a sub-frame associated with a first carrier frequency;

receiving an assignment of a downlink time slot of a sub-frame associated with a second carrier frequency; and

preventing the first carrier frequency from being the same frequency as the second carrier frequency when the uplink time slot is sequential to the downlink time slot.

27. The computer program product of claim 26, wherein the uplink time slot and the downlink time slot are utilized for an RF leakage-sensitive application.

28. The computer program product of claim 27, wherein the RF leakage-sensitive application comprises a voice call.

29. The computer program product of claim 26, wherein the first time slot is sequential to the second time slot.

30. The computer program product of claim 29, wherein the first time slot corresponds to at least one uplink channel for the mobile terminal, and the second time slot corresponds to at least one downlink channel for the mobile terminal.

31. An apparatus for wireless communication in a TD-SCDMA system, comprising:

at least one processor; and

a memory coupled to the at least one processor,

wherein the at least one processor is configured to;

receive an assignment of an uplink time slot of a sub-frame;

receive an assignment of a downlink time slot of the sub-frame; and

prevent the uplink time slot from being sequential to the downlink time slot.

32. The apparatus of claim 31, wherein the uplink time slot and the downlink time slot are utilized for an RF leakage-sensitive application.

33. The apparatus of claim 32, wherein the RF leakage-sensitive application comprises a voice call.

34. The apparatus of claim 31,

wherein the first time slot is within a first carrier frequency, and the second time slot is within a second carrier frequency, and

wherein the first carrier frequency is the same carrier frequency as the second carrier frequency.

35. The apparatus of claim 34, wherein the first time slot corresponds to at least one uplink channel for the mobile terminal, and the second time slot corresponds to at least one downlink channel for the mobile terminal.

36. An apparatus for wireless communication in a TD-SCDMA system, comprising:

at least one processor; and

a memory coupled to the at least one processor,

wherein the at least one processor is configured to;

receive an assignment of an uplink time slot of a sub-frame associated with a first carrier frequency;

receive an assignment of a downlink time slot of a sub-frame associated with a second carrier frequency; and

prevent the first carrier frequency from being the same frequency as the second carrier frequency when the uplink time slot is sequential to the downlink time slot.

37. The apparatus of claim 36, wherein the uplink time slot and the downlink time slot are utilized for an RF leakage-sensitive application.

38. The apparatus of claim 37, wherein the RF leakage-sensitive application comprises a voice call.

39. The apparatus of claim 36, wherein the first time slot is sequential to the second time slot.

40. The apparatus of claim 39, wherein the first time slot corresponds to at least one uplink channel for the mobile terminal, and the second time slot corresponds to at least one downlink channel for the mobile terminal.