Adjustment of Timing Advance Values in Mobile Devices

• US 20180035397A1
• Filed: 04/07/2015
• Published: 02/01/2018
• Est. Priority Date: 04/07/2015
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Chintan Shirish Ahah, Jiming Guo, Ling Xie, Qualcomm, Inc.
• Inventors: XIE, Ling, SHAH, Chintan Shirish, GUO, Jiming
• Granted Patent: US 10,736,058 B2
• Time in Patent Office: Days
• CPC Class Codes: H04W 56/00 Synchronisation arrangements
• CPC Class Codes: H04W 56/0005 synchronizing of arrival of multiple uplinks
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/51 based on terminal or device properties

Abstract

Various embodiments include methods for adjusting timing advance values on a mobile communication device that includes receiving, on the mobile communication device, a timing advance adjustment value from a base station and determining whether the timing advance adjustment value exceeds an adjustment threshold. The mobile communication device may ignore the timing advance adjustment value in response to determining that the timing advance adjustment value exceeds the adjustment threshold, and may adjust a timing advance value stored on the mobile communication device by the timing advance adjustment value in response to determining that the timing advance adjustment value does not exceed the adjustment threshold.

Claims

1. A method for adjusting timing advance values on a mobile communication device, comprising:

determining whether a timing advance adjustment value received in the mobile communication device exceeds an adjustment threshold; and

ignoring the timing advance adjustment value in response to determining that the timing advance adjustment value exceeds the adjustment threshold.

2. The method of claim 1, further comprising adjusting a timing advance value stored on the mobile communication device by the timing advance adjustment value in response to determining that the timing advance adjustment value does not exceed the adjustment threshold.

3. The method of claim 1, wherein the timing advance adjustment value is received after a tune-away from a base station by the mobile communication device.

4. The method of claim 3, further comprising:

determining whether the timing advance adjustment value is received after a predetermined number of sub-frames after the tune-away is completed; and

adjusting a timing advance value stored on the mobile communication device by the timing advance adjustment value in response to determining that the timing advance adjustment value is received after a predetermined number of sub-frames after the tune-away is completed.

5. The method of claim 1, further comprising:

determining whether the mobile communication device has reestablished an uplink connection with a network after a predetermined amount of time after ignoring the timing advance adjustment value; and

performing a random channel access procedure in response to determining that the mobile communication device has not reestablished the uplink connection with the network after the predetermined amount of time after ignoring the timing advance adjustment value.

6. The method of claim 1, wherein ignoring the timing advance adjustment value comprises utilizing a timing advance value previously stored on the mobile communication device to communicate with a base station.

7. The method of claim 1, wherein the adjustment threshold is a value consistent with a maximum distance that the mobile communication device could reasonably travel during a specified time frame.

8. A mobile communication device comprising:

a radio frequency (RF) resource;

a memory; and

a processor coupled to the RF resource and the memory, configured to connect to two or more Subscriber Identity Module (“

SIM”

) modules, and configured with processor-executable instructions to;

determine whether a timing advance adjustment value received in the mobile communication device exceeds an adjustment threshold; and

ignore the timing advance adjustment value in response to determining that the timing advance adjustment value exceeds the adjustment threshold.

9. The mobile communication device of claim 8, wherein the processor is further configured with processor-executable instruction to adjust a timing advance value stored in the memory by the timing advance adjustment value in response to determining that the timing advance adjustment value does not exceed the adjustment threshold.

10. The mobile communication device of claim 8, wherein the timing advance adjustment value is received after a tune-away from a base station by the mobile communication device.

11. The mobile communication device of claim 10, wherein the processor is further configured with processor-executable instruction to:

determine whether the timing advance adjustment value is received after a predetermined number of sub-frames after the tune-away is completed; and

adjust a timing advance value stored in the memory by the timing advance adjustment value in response to determining that the timing advance adjustment value is received after a predetermined number of sub-frames after the tune-away is completed.

12. The mobile communication device of claim 8, wherein the processor is further configured with processor-executable instruction to:

determine whether the mobile communication device has reestablished an uplink connection with a network after a predetermined amount of time after ignoring the timing advance adjustment value; and

perform a random channel access procedure in response to determining that the mobile communication device has not reestablished the uplink connection with the network after the predetermined amount of time after ignoring the timing advance adjustment value.

13. The mobile communication device of claim 8, wherein the processor is further configured with processor-executable instruction to ignore the timing advance adjustment value by utilizing a timing advance value previously stored in the memory to communicate with a base station.

14. The mobile communication device of claim 8, wherein the adjustment threshold is a value consistent with a maximum distance that the mobile communication device could reasonably travel during a specified time frame.

15. A mobile communication device, comprising:

means for determining whether a timing advance adjustment value received in the mobile communication device exceeds an adjustment threshold; and

means for ignoring the timing advance adjustment value in response to determining that the timing advance adjustment value exceeds the adjustment threshold.

16. A non-transitory processor-readable storage medium on which are stored processor-executable instructions configured to cause a processor of a mobile communication device to perform operations:

determining whether a timing advance adjustment value received in the mobile communication device exceeds an adjustment threshold; and

ignoring the timing advance adjustment value in response to determining that the timing advance adjustment value exceeds the adjustment threshold.

17. The non-transitory processor-readable storage medium of claim 16, wherein the stored processor-executable instructions are configured to cause a processor of a mobile communication device to perform operations further comprising adjusting a timing advance value stored on the mobile communication device by the timing advance adjustment value in response to determining that the timing advance adjustment value does not exceed the adjustment threshold.

18. The non-transitory processor-readable storage medium of claim 16, wherein the timing advance adjustment value is received after a tune-away from a base station by the mobile communication device.

19. The non-transitory processor-readable storage medium of claim 18, wherein the stored processor-executable instructions are configured to cause a processor of a mobile communication device to perform operations further comprising:

determining whether the timing advance adjustment value is received after a predetermined number of sub-frames after the tune-away is completed; and

adjusting a timing advance value stored on the mobile communication device by the timing advance adjustment value in response to determining that the timing advance adjustment value is received after a predetermined number of sub-frames after the tune-away is completed.

20. The non-transitory processor-readable storage medium of claim 16, wherein the stored processor-executable instructions are configured to cause a processor of a mobile communication device to perform operations further comprising:

determining whether the mobile communication device has reestablished an uplink connection with a network after a predetermined amount of time after ignoring the timing advance adjustment value; and

performing a random channel access procedure in response to determining that the mobile communication device has not reestablished the uplink connection with the network after the predetermined amount of time after ignoring the timing advance adjustment value.

21. The non-transitory processor-readable storage medium of claim 16, wherein the stored processor-executable instructions are configured to cause a processor of a mobile communication device to perform operations such that ignoring the timing advance adjustment value comprises utilizing a timing advance value previously stored on the mobile communication device to communicate with a base station.

22. The non-transitory processor-readable storage medium of claim 16, wherein the adjustment threshold is a value consistent with a maximum distance that the mobile communication device could reasonably travel during a specified time frame.