Optimal sleep / paging cycle duration in a wireless network

• US 8,923,895 B2
• Filed: 09/28/2007
• Issued: 12/30/2014
• Est. Priority Date: 09/28/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Ananthanarayanan, Arulmozhi K., Rosen, Eric C., Song, Bongyong, Lindner, Mark A., Ross, David J., Santhanam, Arvind S.
• Primary Examiner(s): Sarwar, Babar
• Application Number:
  US12/377,116
• Publication Number:
  US 20100159959A1
• Time in Patent Office: 2,650 Days
• Field of Search: 455/458, 455/550.1, 455/574, 455/420, 455/421, 455/426.1, 370/311, 370/318, 370/338
• US Class Current: 455/458
• CPC Class Codes: H04W 52/02 Power saving arrangements in wired systems H04L12/12; signaling of mobile application services, e.g. low battery notifications H04W4/20
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 68/02 Arrangements for increasing efficiency of notification or paging channel
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Systems and methods for optimizing paging cycles in a wireless communication system are disclosed. An access terminal can include logic configured to determine an optimal paging cycle and logic configured to set the paging cycle based on the optimal paging cycle, where the paging cycle varies based on at least one optimizing metric.

Claims

1. A method comprising:

determining an optimal paging cycle;

setting a paging cycle of an access terminal based on the optimal paging cycle, wherein the optimal paging cycle varies over time based on at least one optimizing metric;

evaluating performance of an application being executed by the access terminal during the paging cycle based on collected statistics; and

adjusting the optimal paging cycle, when the performance of the application falls below a threshold.

2. The method of claim 1, wherein the at least one optimizing metric is at least one of a time of day, call arrival statistics, user profile, type of communication received, or available energy reserve.

3. The method of claim 1, wherein determining the optimal paging cycle comprises:

determining a time of day; and

setting the optimal paging cycle based on the time of day.

4. The method of claim 1, wherein the performance is evaluated based on call arrival statistics.

5. The method of claim 4, wherein the threshold is that 95 percent of mobile-terminated calls arrive when the access terminal is operating at a 213 ms paging cycle.

6. The method of claim 1, wherein determining the optimal paging cycle comprises:

collecting call arrival statistics; and

setting the optimal paging cycle based on the call arrival statistics.

7. The method of claim 6, wherein the call arrival statistics are determined at the access terminal.

8. The method of claim 1, further comprising:

setting the optimal paging cycle to an increased duration, if an available energy reserve falls below a threshold value.

9. The method of claim 1, wherein determining the optimal paging cycle comprises:

registering the access terminal at an application server; and

setting the optimal paging cycle based on a user profile stored for the access terminal.

10. The method of claim 1, wherein setting the paging cycle of the access terminal comprises:

generating a paging cycle request in the application to update the paging cycle;

processing the paging cycle request in an application programming interface for adjusting the paging cycle;

transmitting the paging cycle request to an access network in communication with the access terminal;

receiving a request acceptance from the access network; and

forwarding the request acceptance to the application.

11. The method of claim 1, wherein determining the optimal paging cycle comprises:

setting a reduced paging cycle based on a scheduled event.

12. The method of claim 11, wherein the reduced paging cycle is automatically set before the scheduled event based on information saved on the access terminal.

13. The method of claim 1, wherein determining the optimal paging cycle comprises:

setting a reduced paging cycle based on a type of communication received.

14. The method of claim 13, wherein the type of communication received is a push-to-talk call.

15. The method of claim 1, wherein the performance is evaluated based on call arrival statistics, and wherein the threshold comprises a fixed percent of mobile-terminated call arrivals occurring during the optimal paging cycle.

16. The method of claim 1, wherein evaluating the performance further comprises applying a penalty function for a call drop.

17. The method of claim 1, further comprising:

making or receiving a call;

changing the optimal paging cycle to a different paging cycle in response to the making or the receiving of the call;

determining expiration of a time period within which a subsequent call has not been made or received during use of the different paging cycle; and

reverting back to the optimal paging cycle based on the expiration of the time period.

18. The method of claim 1, wherein the at least one optimizing metric comprises a call setup latency.

19. The method of claim 18, wherein the threshold is that 95 percent of mobile-terminated calls arrive when the access terminal is operating at a 213 ms paging cycle.

20. The method of claim 1, wherein the at least one optimizing metric comprises at least one of a customer profile.

21. The method of claim 20, wherein the customer profile comprises at least one of a business profile, an emergency profile or consumer profile.

22. The method of claim 21, wherein call set up latency guarantees are determined based on the customer profile.

23. The method of claim 21, wherein the business profile or the emergency profile is given a lower call set up latency guarantee than the consumer profile.

24. An apparatus comprising:

logic configured to determine an optimal paging cycle;

logic configured to set a paging cycle on an access terminal based on the optimal paging cycle, wherein the optimal paging cycle varies over time based on at least one optimizing metric;

logic configured to evaluate performance of an application being executed by the access terminal during the paging cycle based on collected statistics; and

logic configured to adjust the optimal paging cycle, when the performance of the application falls below a threshold.

25. The apparatus of claim 24, wherein the at least one optimizing metric is at least one of a time of day, call arrival statistics, user profile, type of communication received, or available energy reserve.

26. The apparatus of claim 24, which further comprises:

logic configured to determine a time of day; and

logic configured to set the optimal paging cycle based on the time of day.

27. The apparatus of claim 24, wherein the logic configured to adjust the optimal paging cycle adjusts based on call arrival statistics.

28. The apparatus of claim 27, wherein the call arrival statistics are determined at the access terminal.

29. The apparatus of claim 24, further comprising:

logic configured to set the optimal paging cycle to an increased duration, if an available energy reserve falls below a threshold value.

30. The apparatus of claim 24, wherein the logic configured to determine the optimal paging cycle comprises:

logic configured to register the access terminal at an application server; and

logic configured to set the optimal paging cycle based on a user profile stored for the access terminal.

31. The apparatus of claim 24, wherein the logic configured to set the paging cycle of the access terminal comprises:

the application which is configured to generate a paging cycle request to update the paging cycle;

an application programming interface (API) configured to process the paging cycle request;

logic configured to transmit the paging cycle request to an access network in communication with the access terminal;

logic configured to receive a request acceptance from the access network; and

logic configured to forwarding the request acceptance the application that generated the paging cycle request.

32. The apparatus of claim 24, further comprising:

logic configured to set a reduced paging cycle based on a type of communication received.

33. The apparatus of claim 32, wherein the type of communication received is a push-to-talk call.

34. The apparatus of claim 24, wherein the performance is evaluated based on call arrival statistics, and wherein the threshold comprises a fixed percent of mobile-terminated call arrivals occurring during the optimal paging cycle.

35. The apparatus of claim 24, wherein the logic configured to evaluate the performance further comprises logic configured to apply a penalty function for a call drop.

36. The apparatus of claim 24, further comprising:

logic configured to make or receive a call;

logic configured to change the optimal paging cycle to a different paging cycle in response to the making or the receiving of the call;

logic configured to determine expiration of a time period within which a subsequent call has not been made or received during use of the different paging cycle; and

logic configured to revert back to the optimal paging cycle based on the expiration of the time period.

37. An access terminal comprising:

means for determining an optimal paging cycle;

means for setting a paging cycle of the access terminal based on the optimal paging cycle, wherein the paging cycle varies over time based on at least one optimizing metric;

means for evaluating performance of an application being executed by the access terminal during the paging cycle based on collected statistics; and

means for adjusting the optimal paging cycle, when the performance of the application falls below a threshold.

38. The access terminal of claim 37, wherein the at least one optimizing metric is at least one of a time of day, call arrival statistics, user profile, type of communication received, or available energy reserve.

39. The access terminal of claim 37, wherein the means for setting the paging cycle of the access terminal comprises:

means for generating a paging cycle request in the application to update the paging cycle;

means for processing the paging cycle request for adjusting the paging cycle;

means for transmitting the paging cycle request to an access network in communication with the access terminal;

means for receiving a request acceptance from the access network; and

means for forwarding the request acceptance to the application.

40. The access terminal of claim 37, wherein the means for determining the optimal paging cycle comprises:

means for collecting call arrival statistics based on detected call arrivals at the access terminal; and

means for setting the optimal paging cycle based on the call arrival statistics.

41. A non-transitory computer-readable medium embodying a set of instructions, wherein the set of instructions when executed by one or more processors comprises:

a set of instructions to determine an optimal paging cycle;

a set of instructions to set a paging cycle of an access terminal based on the optimal paging cycle, wherein the optimal paging cycle varies over time based on at least one optimizing metric;

a set of instructions to evaluate performance of an application being executed by the access terminal during the paging cycle based on collected statistics; and

a set of instructions to adjust the optimal paging cycle, when the performance of the application falls below a threshold.

42. The non-transitory computer-readable medium of claim 41, further comprising:

a set of instructions to determine a time of day; and

a set of instructions to set the optimal paging cycle based on the time of day.

43. The non-transitory computer-readable medium of claim 41, further comprising:

a set of instructions to collect call arrival statistics based on detected call arrivals at the access terminal; and

a set of instructions to set the optimal paging cycle based on the call arrival statistics.

44. The non-transitory computer-readable medium of claim 41, further comprising:

a set of instructions to set a reduced paging cycle based on a type of communication received.

45. The non-transitory computer-readable medium of claim 44, wherein the type of communication received is a push-to-talk call.