INTERFERENCE MITIGATION IN A WIRELESS COMMUNICATION SYSTEM

• US 20160255639A1
• Filed: 11/20/2014
• Published: 09/01/2016
• Est. Priority Date: 11/29/2013
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: LIU, Minkui, NGAI, Francis Ming-Meng, VAZE, Chinmway S., DANG, Zhibin, LU, Xiaoning, YESHWANTPUR, Abhijit, EFE, Baris, CHEN, Qingxin, WANG, Shanshan, KANG, Insung, CHIN, Tom, ZHANG, Wei, MCCLOUD, Michael Lee
• Application Number:
  US15/031,220
• Publication Number:
  US 20160255639A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 72/02 Selection of wireless resources by user or terminal
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/1215 for collaboration of different radio technologies
• CPC Class Codes: H04W 72/541 using the level of interference
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

The present methods and apparatus relate to interference mitigation at a user equipment during wireless communication, comprising determining that a first portion of a first radio access technology (RAT) activity scheduled during a first time slot overlaps in duration with a second portion of a second RAT activity scheduled during a second time slot; excluding the first portion of the first RAT activity based at least in part on determining that the first portion of the first RAT activity overlaps in duration with the second portion of the second RAT activity; and performing a non-overlap portion of the first RAT activity during the first time slot, wherein the non-overlap portion of the first RAT activity is a portion of the first RAT activity that remains after excluding of the first portion of the first RAT activity.

Claims

1. A method of interference mitigation at a user equipment during wireless communication, comprising:

determining, at the user equipment, that a first portion of a first radio access technology (RAT) activity scheduled during a first time slot overlaps in duration with a second portion of a second RAT activity scheduled during a second time slot;

excluding, by the user equipment, the first portion of the first RAT activity based at least in part on determining that the first portion of the first RAT activity overlaps in duration with the second portion of the second RAT activity; and

performing, by the user equipment, a non-overlap portion of the first RAT activity during the first time slot, wherein the non-overlap portion of the first RAT activity is a portion of the first RAT activity that remains after excluding of the first portion of the first RAT activity.

2. The method of claim 1, wherein the excluding includes excluding the first portion of the first RAT activity when the overlap in duration meets or exceeds an overlap duration threshold value.

3. The method of claim 1, further comprising determining whether the overlap in duration of the first portion of the first RAT activity occurs at a beginning portion or an end portion of the first time slot.

4. The method of claim 3, further comprising rescheduling the performing when the overlap in duration of the first portion of the first RAT activity occurs at the beginning portion of the first time slot.

5. The method of claim 1, further comprising removing the overlap in duration of the first portion of the first RAT activity when the overlap in duration of the first portion of the first RAT activity occurs at the end portion of the first time slot.

6. The method of claim 1, wherein the first RAT activity includes a frequency measurement during time slot zero.

7. The method of claim 1, further comprising determining one or both of a percentage of overlap or time of overlap associated with the overlap in duration.

8. The method of claim 1, wherein the overlap duration threshold value is either predetermined or automatically adjusted based on one or more network conditions.

9. The method of claim 1, wherein the overlap in duration corresponds to activity scheduled on two or more RATs over the same period of time.

10. The method of claim 1, wherein the first RAT activity corresponds to activity on one or both of a Global System for Mobile Communications (GSM) and Long Term Evolution (LTE).

11. The method of claim 1, wherein the second RAT activity corresponds to activity on a Time Division Synchronous Code Division Multiple Access (TD-SCDMA).

12. The method of claim 1, wherein the first RAT activity corresponds to one or both of a transmission activity and reception activity.

13. The method of claim 1, wherein the second RAT activity corresponds to one or both of a transmission activity and reception activity.

14. A computer-readable medium storing computer executable code for interference mitigation at a user equipment during wireless communication, comprising:

code for determining that a first portion of a first radio access technology (RAT) activity scheduled during a first time slot overlaps in duration with a second portion of a second RAT activity scheduled during a second time slot;

code for excluding the first portion of the first RAT activity based at least in part on determining that the first portion of the first RAT activity overlaps in duration with the second portion of the second RAT activity; and

code for performing a non-overlap portion of the first RAT activity during the first time slot, wherein the non-overlap portion of the first RAT activity is a portion of the first RAT activity that remains after excluding of the first portion of the first RAT activity.

15. The computer-readable medium of claim 14, wherein the code for excluding includes code for excluding the first portion of the first RAT activity when the overlap in duration meets or exceeds an overlap duration threshold value.

16. An apparatus for interference mitigation at a user equipment during wireless communication, comprising:

means for determining that a first portion of a first radio access technology (RAT) activity scheduled during a first time slot overlaps in duration with a second portion of a second RAT activity scheduled during a second time slot;

means for excluding the first portion of the first RAT activity based at least in part on determining that the first portion of the first RAT activity overlaps in duration with the second portion of the second RAT activity; and

means for performing a non-overlap portion of the first RAT activity during the first time slot, wherein the non-overlap portion of the first RAT activity is a portion of the first RAT activity that remains after excluding of the first portion of the first RAT activity.

17. The apparatus of claim 16, wherein the means for excluding includes means for excluding the first portion of the first RAT activity when the overlap in duration meets or exceeds an overlap duration threshold value.

18. An apparatus for interference mitigation at a user equipment during wireless communication, comprising:

an overlap determination component configured to determine that a first portion of a first radio access technology (RAT) activity scheduled during a first time slot overlaps in duration with a second portion of a second RAT activity scheduled during a second time slot;

an excluding component configured to exclude the first portion of the first RAT activity based at least in part on determining that the first portion of the first RAT activity overlaps in duration with the second portion of the second RAT activity; and

a communication component configured to perform a non-overlap portion of the first RAT activity during the first time slot, wherein the non-overlap portion of the first RAT activity is a portion of the first RAT activity that remains after excluding of the first portion of the first RAT activity.

19. The apparatus of claim 18, wherein the excluding includes excluding the first portion of the first RAT activity when the overlap in duration meets or exceeds an overlap duration threshold value.

20. The apparatus of claim 18, further comprising determining whether the overlap in duration of the first portion of the first RAT activity occurs at a beginning portion or an end portion of the first time slot.

21. The apparatus of claim 20, further comprising rescheduling the performing when the overlap in duration of the first portion of the first RAT activity occurs at the beginning portion of the first time slot.

22. The apparatus of claim 18, further comprising removing the overlap in duration of the first portion of the first RAT activity when the overlap in duration of the first portion of the first RAT activity occurs at the end portion of the first time slot.

23. The apparatus of claim 18, wherein the first RAT activity includes a frequency measurement during time slot zero.

24. The apparatus of claim 18, wherein the overlap determination component is further configured to determine one or both of a percentage of overlap or time of overlap associated with the overlap in duration.

25. The apparatus of claim 18, wherein the overlap duration threshold value is either predetermined or automatically adjusted based on one or more network conditions.

26. The apparatus of claim 18, wherein the overlap in duration corresponds to activity scheduled on two or more RATs over the same period of time.

27. The apparatus of claim 18, wherein the first RAT activity corresponds to activity on one or both of a Global System for Mobile Communications (GSM) and Long Term Evolution (LTE).

28. The apparatus of claim 18, wherein the second RAT activity corresponds to activity on a Time Division Synchronous Code Division Multiple Access (TD-SCDMA).

29. The apparatus of claim 18, wherein the first RAT activity corresponds to one or both of a transmission activity and reception activity.

30. The apparatus of claim 18, wherein the second RAT activity corresponds to one or both of a transmission activity and reception activity.