Method and apparatus for the multimode terminal to monitor paging messages in CDMA EVDO and frame synchronous TD-SCDMA networks

• US 8,996,041 B2
• Filed: 03/26/2010
• Issued: 03/31/2015
• Est. Priority Date: 11/05/2009
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Chin, Tom, Shi, Guangming, Lee, Kuo-Chun
• Primary Examiner(s): Georgewill, Opiribo
• Application Number:
  US13/384,179
• Publication Number:
  US 20120264483A1
• Time in Patent Office: 1,831 Days
• Field of Search: 455/458, 455/552.1
• US Class Current: 455/458
• CPC Class Codes: H04W 68/00 User notification, e.g. alerting and paging, for incoming communication, change of service or the like
• 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

Certain aspects of the present disclosure propose techniques for avoiding paging interval conflicts in a multimode terminal (MMT) capable of communicating via at least two different radio access technologies (RATs). Certain aspects provide a method for communicating, by an MMT, with first and second networks via first and second RATs. The method generally includes determining a discontinuous reception (DRX) cycle length of the first network, determining a paging cycle length of the second network, determining—based on the paging cycle length and the DRX cycle length—information associated with a position of a paging interval within the paging cycle length of the second network that avoids overlap between a paging interval of the first network and the paging interval of the second network, and communicating the information to the second network. For some aspects, the information may comprise a set of control channel cycle (CCC) indices.

Claims

1. A method for communicating, by a multi-mode terminal (MMT), with first and second networks via first and second radio access technologies (RATs), comprising:

determining a discontinuous reception (DRX) cycle length of the first network that corresponds to start and an end of a paging interval of the first network;

determining a paging cycle length of the second network;

determining, based on the paging cycle length and the DRX cycle length, a set of channel control cycle (CCC) indices associated with a position of a paging interval within the paging cycle length of the second network that covers the paging interval of the first network, the set of channel control cycle indices determined to avoid overlap between the paging interval of the first network and the paging interval of the second network;

communicating at least one of the channel control cycle indices in the set of channel control cycle indices to the second network; and

scheduling the paging interval of the first network and the paging interval of the second network based on the determined information.

2. The method of claim 1, wherein the first RAT comprises Time Division Synchronous Code Division Multiple Access (TD-SCDMA).

3. The method of claim 2, wherein the second RAT comprises Code Division Multiple Access (CDMA) EVDO (Evolution-Data Optimized).

4. The method of claim 3, wherein the DRX cycle length is a multiple m of 1.28 seconds and the paging cycle length is a multiple n of 1.28 seconds.

5. The method of claim 1, wherein the start and the end of the paging interval of the first network are based on a delay for tuning a radio frequency (RF) circuit of the MMT.

6. The method of claim 1, wherein the DRX cycle length is a multiple m of 1.28 seconds, the paging cycle length is a multiple n of 1.28 seconds, and the start and the end of the paging interval of the first network are based on a greatest common denominator between m and n.

7. The method of claim 1, wherein communicating the at least one of the CCC indices to the second network comprises transmitting a Configuration Request with the at least one of the CCC indices as a Preferred Control Channel Cycle.

8. The method of claim 1, further comprising selecting one of the CCC indices, wherein communicating the at least one of the CCC indices comprises communicating the selected one of the CCC indices to the second network.

9. An apparatus for communicating with first and second networks via first and second radio access technologies (RATs), comprising:

means for determining a discontinuous reception (DRX) cycle length of the first network that corresponds to start and an end of a paging interval of the first network;

means for determining a paging cycle length of the second network;

means for determining, based on the paging cycle length and the DRX cycle length, a set of channel control cycle (CCC) indices associated with a position of a paging interval within the paging cycle length of the second network that covers the paging interval of the first network, the set of channel control cycle indices determined to avoid overlap between the paging interval of the first network and the paging interval of the second network;

means for communicating at least one of the channel control cycle indices in the set of channel control cycle indices to the second network; and

means for scheduling the paging interval of the first network and the paging interval of the second network based on the determined information.

10. The apparatus of claim 9, wherein the first RAT comprises Time Division Synchronous Code Division Multiple Access (TD-SCDMA).

11. The apparatus of claim 10, wherein the second RAT comprises Code Division Multiple Access (CDMA) EVDO (Evolution-Data Optimized).

12. The apparatus of claim 11, wherein the DRX cycle length is a multiple m of 1.28 seconds and the paging cycle length is a multiple n of 1.28 seconds.

13. The apparatus of claim 9, wherein the start and the end of the paging interval of the first network are based on a delay for tuning a radio frequency (RF) circuit of the apparatus.

14. The apparatus of claim 9, wherein the DRX cycle length is a multiple m of 1.28 seconds, the paging cycle length is a multiple n of 1.28 seconds, and the start and the end of the paging interval of the first network are based on a greatest common denominator between m and n.

15. The apparatus of claim 9, wherein the means for communicating the at least one of the CCC indices to the second network comprises means for transmitting a Configuration Request with the at least one of the CCC indices as a Preferred Control Channel Cycle.

16. The apparatus of claim 9, further comprising means for selecting one of the CCC indices, wherein the means for communicating the at least one of the CCC indices comprises means for communicating the selected one of the CCC indices to the second network.

17. An apparatus for communicating with first and second networks via first and second radio access technologies (RATs), comprising:

at least one processor configured to;

determine a discontinuous reception (DRX) cycle length of the first network that corresponds to start and an end of a paging interval of the first network;

determine a paging cycle length of the second network;

determine, based on the paging cycle length and the DRX cycle length, a set of channel control cycle (CCC) indices associated with a position of a paging interval within the paging cycle length of the second network that covers the paging interval of the first network, the set of channel control cycle indices determined to avoid overlap between the paging interval of the first network and the paging interval of the second network;

communicate at least one of the channel control cycle indices in the set of channel control cycle indices to the second network; and

schedule the paging interval of the first network and the paging interval of the second network based on the determined information; and

a memory coupled to the at least one processor.

18. The apparatus of claim 17, wherein the first RAT comprises Time Division Synchronous Code Division Multiple Access (TD-SCDMA).

19. The apparatus of claim 18, wherein the second RAT comprises Code Division Multiple Access (CDMA) EVDO (Evolution-Data Optimized).

20. The apparatus of claim 19, wherein the DRX cycle length is a multiple m of 1.28 seconds and the paging cycle length is a multiple n of 1.28 seconds.

21. The apparatus of claim 17, wherein the start and the end of the paging interval of the first network are based on a delay for tuning a radio frequency (RF) circuit of the apparatus.

22. The apparatus of claim 17, wherein the DRX cycle length is a multiple m of 1.28 seconds, the paging cycle length is a multiple n of 1.28 seconds, and the start and the end of the paging interval of the first network are based on a greatest common denominator between m and n.

23. The apparatus of claim 17, wherein the at least one processor is configured to communicate the at least one of the CCC indices to the second network by transmitting a Configuration Request with the at least one of the CCC indices as a Preferred Control Channel Cycle.

24. The apparatus of claim 17, wherein the at least one processor is configured to select one of the CCC indices such that the at least one processor is configured to communicate the at least one of the CCC indices by communicating the selected one of the CCC indices to the second network.

25. A computer-program product for communicating with first and second networks via first and second radio access technologies (RATs), the computer-program product comprising:

a non-transitory computer-readable medium comprising code for;

determining a discontinuous reception (DRX) cycle length of the first network that corresponds to start and an end of a paging interval of the first network;

determining a paging cycle length of the second network;

determining, based on the paging cycle length and the DRX cycle length, a set of channel control cycle (CCC) indices associated with a position of a paging interval within the paging cycle length of the second network and cover the paging interval of the first network, the set of channel control cycle indices determined to avoid overlap between the paging interval of the first network and the paging interval of the second network;

communicating at least one of the channel control cycle indices in the set of channel control cycle indices to the second network; and

scheduling the paging interval of the first network and the paging interval of the second network based on the determined information.

26. The computer-program product of claim 25, wherein the first RAT comprises Time Division Synchronous Code Division Multiple Access (TD-SCDMA).

27. The computer-program product of claim 26, wherein the second RAT comprises Code Division Multiple Access (CDMA) EVDO (Evolution-Data Optimized).

28. The computer-program product of claim 27, wherein the DRX cycle length is a multiple m of 1.28 seconds and the paging cycle length is a multiple n of 1.28 seconds.

29. The computer-program product of claim 25, wherein the start and the end of the paging interval of the first network are based on a delay for tuning a radio frequency (RF) circuit of a multimode terminal (MMT) communicating with the first and second networks.

30. The computer-program product of claim 25, wherein the DRX cycle length is a multiple m of 1.28 seconds, the paging cycle length is a multiple n of 1.28 seconds, and the start and the end of the paging interval of the first network are based on a greatest common denominator between m and n.

31. The computer-program product of claim 25, wherein communicating the at least one of the CCC indices to the second network comprises transmitting a Configuration Request with the at least one of the CCC indices as a Preferred Control Channel Cycle.

32. The computer-program product of claim 25, wherein the computer-readable medium comprises code for selecting one of the CCC indices, wherein communicating the at least one of the CCC indices comprises communicating the selected one of the CCC indices to the second network.