Reselection failure detection and prevention in multi-SIM wireless communication devices

• US 10,172,060 B2
• Filed: 05/03/2016
• Issued: 01/01/2019
• Est. Priority Date: 05/03/2016
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Raghunathan, Shravan Kumar, Dhanapal, Muthukumaran, Krishnamoorthy, Parthasarathy
• Primary Examiner(s): Sams, Matthew C
• Application Number:
  US15/145,581
• Publication Number:
  US 20170325144A1
• Time in Patent Office: 973 Days
• CPC Class Codes: H04W 36/008375 based on historical data
• CPC Class Codes: H04W 36/16 Performing reselection for specific purposes
• CPC Class Codes: H04W 36/305 Handover due to radio link failure control signalling for hand-off failure H04W36/0079
• CPC Class Codes: H04W 36/362 Conditional handover
• CPC Class Codes: H04W 48/02 Access restriction performed under specific conditions
• CPC Class Codes: H04W 48/06 based on traffic conditions

Abstract

Examples described herein relate to managing reselection for a wireless communication device having a first subscription associated with a first Radio Access Technology (RAT) and a second subscription associated with a second RAT, including determining an occurrence of a barring procedure that bars a target cell or a target frequency for the first subscription for a barring duration and deprioritizing the target cell or the target frequency for the barring duration on the second subscription.

Claims

1. A method for managing cell reselection for a wireless communication device having a first subscription associated with a first Subscriber Identity Module (SIM) and a second subscription associated with a second SIM, the method comprising:

determining an occurrence of a barring procedure associated with at least one of a target cell or a target frequency for the first subscription;

determining a mode associated with the second subscription, wherein the mode is at least one of a connected mode or an idle mode;

deprioritizing the at least one target cell or target frequency for use with the second subscription by a first procedure based on the determination that the mode associated with the second subscription is the connected mode; and

deprioritizing the at least one target cell or target frequency for use with the second subscription by a second procedure based on the determination that the mode associated with the second subscription is the idle mode, wherein the first procedure is different from the second procedure.

2. The method of claim 1, further comprising:

determining a barring duration in which the at least one target cell or target frequency is not considered for a reselection procedure for the first subscription.

3. The method of claim 2, wherein the mode associated with the second subscription is the idle mode.

4. The method of claim 3, wherein the second procedure comprises:

lowering a rank associated with the target cell for cell searches and measurements for the barring duration.

5. The method of claim 4, wherein the rank associated with the target cell is set to a lowest priority for cell searches and measurements for the barring duration.

6. The method of claim 3, wherein the second procedure comprises:

lowering a cell reselection priority of the target frequency for the barring duration.

7. The method of claim 6, wherein the cell reselection priority of the target frequency is set to a lowest priority for the barring duration.

8. The method of claim 2, wherein the second subscription is in the connected mode.

9. The method of claim 8, wherein first procedure comprises:

blacklisting the target cell to forbid measurements associated with the target cell for the barring duration.

10. The method of claim 9, wherein the blacklisting comprises:

adding a Primary Cell Index (PCI) identifying the target cell to a BlackListAddModList.

11. The method of claim 8, wherein the first procedure comprises:

removing the target frequency from measurements for the barring duration.

12. The method of claim 2, further comprising:

determining whether a first Public Land Mobile Network (PLMN) associated with the first subscription is the same as a second PLMN associated with the second subscription; and

transferring the barring duration from a first software layer associated with the first subscription to a second software layer associated with the second subscription in response determining that the first PLMN is the same as the second PLMN.

13. The method of claim 1, wherein:

the first SIM corresponds to a first Radio Access Technology (RAT);

the second SIM corresponds to a second RAT; and

the first RAT and the second RAT are the same.

14. The method of claim 13, further comprising:

determining that the first subscription is being deprioritized; and

deprioritizing the second subscription.

15. The method of claim 14, further comprising:

determining whether a first Public Land Mobile Network (PLMN) associated with the first subscription is the same as a second PLMN associated with the second subscription; and

transferring information related to the first subscription being deprioritized from a first software layer associated with the first subscription to a second software layer associated with the second subscription in response determining that the first PLMN is the same as the second PLMN.

16. The method of claim 1, wherein:

the first SIM corresponds to a first RAT;

the second SIM corresponds to a second RAT; and

each of the first RAT and the second RAT is Long Term Evolution (LTE).

17. A wireless communication device, comprising:

at least one radio frequency (RF) resource;

a first Subscriber Identity Module (SIM) associated with a first subscription;

a second SIM associated with a second subscription;

a processor;

a memory storing instructions that, when executed by the processor, cause the wireless communication device to;

determine an occurrence of a barring procedure associated with at least one of a target cell or a target frequency of the first subscription;

determine a mode associated with the second subscription, wherein the mode is at least one of a connected mode or an idle mode;

deprioritize the at least one target cell or target frequency for use with the second subscription by a first procedure based on the determination that the mode associated with the second subscription is the connected mode; and

deprioritize the at least one target cell or target frequency for use with the second subscription by a second procedure based on the determination that the mode associated with the second subscription is the idle mode, wherein the first procedure is different from the second procedure.

18. The wireless communication device of claim 17, wherein execution of the instructions causes the wireless communication device to further:

determine a barring duration in which the at least one target cell or target frequency is not considered for a reselection procedure for the first subscription.

19. The wireless communication device of claim 18, wherein the mode associated with the second subscription is the idle mode.

20. The wireless communication device of claim 19, wherein execution of the instructions to deprioritize by the second procedure causes the wireless communication device to further:

lower a rank associated with the target cell for cell searches and measurements for the barring duration.

21. The wireless communication device of claim 20, wherein the rank associated with the target cell is set to a lowest priority for cell searches and measurements for the barring duration.

22. The wireless communication device of claim 19, wherein execution of the instructions to deprioritize by the second procedure causes the wireless communication device to further:

lower a cell reselection priority of the target frequency for the barring duration.

23. The wireless communication device of claim 22, wherein the cell reselection priority of the target frequency is set to a lowest priority for the barring duration.

24. The wireless communication device of claim 18, wherein the second subscription is in the connected mode.

25. The wireless communication device of claim 24, wherein execution of the instructions to deprioritize by the first procedure causes the wireless communication device to further:

blacklist the target cell to forbid measurements associated with the target cell for the barring duration.

26. The wireless communication device of claim 25, wherein execution of the instructions to blacklist causes the wireless communication device to:

add a Primary Cell Index (PCI) to identify the target cell to a BlackListAddModList.

27. A method for managing reselection for a wireless communication device having a first subscription associated with a first Radio Access Technology (RAT) and a second subscription associated with a second RAT, the method comprising:

determining an occurrence of a barring procedure associated with at least one of a target cell or a target frequency for the first subscription for a barring duration;

determining a mode associated with the second subscription, wherein the mode is at least one of a connected mode or an idle mode;

deprioritizing the at least one target cell or the target frequency for the barring duration for use with the second subscription by a first procedure based on the determination that the mode associated with the second subscription is the connected mode; and

deprioritizing the at least one target cell or the target frequency for the barring duration for use with the second subscription by a second procedure based on a determination that the mode associated with the second subscription is the idle mode, wherein the first procedure is different from the second procedure.

28. A method for managing reselection for a wireless communication device having a first subscription associated with a first Radio Access Technology (RAT) and a second subscription associated with a second RAT, the method comprising:

determining that a first frequency of the first RAT is deprioritized for the first subscription for a barring duration;

determining whether a first Public Land Mobile Network (PLMN) associated with the first subscription is the same as a second PLMN associated with the second subscription;

deprioritizing the first frequency of the second RAT for use with the second subscription in response to determining that the first PLMN and the second PLMN are the same by a first procedure based on a determination that a mode associated with the second subscription is a connected mode; and

deprioritizing the first frequency of the second RAT for use with the second subscription in response to determining that the first PLMN and the second PLMN are the same by a second procedure based on a determination that the mode associated with the second subscription is an idle mode, wherein the first procedure is different from the second procedure.

29. The method of claim 28, wherein the first RAT and the second RAT and the same.

30. The method of claim 28, wherein the first frequency of the first RAT is deprioritized due to network congestion.