USING DTX AND DRX IN A WIRELESS COMMUNICATION SYSTEM

• US 20090122736A1
• Filed: 01/11/2008
• Published: 05/14/2009
• Est. Priority Date: 01/11/2007
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Damnjanovic, Aleksandar, Tenny, Nathan Edward
• Granted Patent: US 8,755,313 B2
• Time in Patent Office: Days
• US Class Current: 370/311
• CPC Class Codes: H04L 12/4633 Interconnection of networks using encapsulation techniques, e.g. tunneling
• CPC Class Codes: H04L 45/00 Routing or path finding of packets in data switching networks routing or path finding in wireless networks H04W40/00
• CPC Class Codes: H04L 45/50 using label swapping, e.g. multi-protocol label switch [MPLS]
• CPC Class Codes: H04L 69/14 Multichannel or multilink protocols
• CPC Class Codes: H04Q 11/0067 Provisions for optical access or distribution networks, e.g. Gigabit Ethernet Passive Optical Network (GE-PON), ATM-based Passive Optical Network (A-PON), PON-Ring
• CPC Class Codes: H04Q 11/0071 Provisions for the electrical-optical layer interface
• CPC Class Codes: H04Q 2011/0077 Labelling aspects, e.g. multiprotocol label switching [MPLS], G-MPLS, MPAS
• 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 52/0206 in access points, e.g. base stations access point devices per se H04W88/08
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0229 where the received signal is a wanted signal
• CPC Class Codes: H04W 52/0245 according to signal strength
• CPC Class Codes: H04W 52/0251 using monitoring of local events, e.g. events related to user activity
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Systems, methodologies, and devices are described that can facilitate reducing power consumption associated with mobile devices. A mobile device can utilize a sleep mode controller that can facilitate selecting and/or switching to a desired sleep mode based in part on predefined sleep mode criteria. The sleep modes can include a non-sleep mode, light sleep mode, and/or deep sleep mode. The mobile device can employ an analyzer to evaluate information related to explicit signals, implicit signals, and/or the current sleep mode to determine whether a condition is met based in part on the predefined sleep mode criteria such that a transition to a different sleep mode is to be performed. If such a condition is met, the sleep mode controller can facilitate transitioning from the current sleep mode to a different sleep mode to facilitate reducing power consumption by the mobile device.

Claims

1. A method that facilitates selecting a sleep mode, comprising:

signaling to facilitate selection of a sleep mode; and

selecting a sleep mode based in part on a predefined sleep mode criteria.

2. The method of claim 1, the predefined sleep mode criteria is based in part on at least one of an available sleep mode, a current sleep mode, a length of time since a last data exchange between a mobile device and a base station, or a direction to transition from a current sleep mode to a different sleep mode, or a combination thereof.

3. The method of claim 1, wherein the signaling is related to at least one of an explicit signal or an implicit signal, or a combination thereof.

4. The method of claim 3, wherein the explicit signal is a message from a base station to a mobile device instructing the mobile device to switch from a current sleep mode to a disparate sleep mode.

5. The method of claim 3, wherein the implicit signal relates to at least one condition associated with the mobile device.

6. The method of claim 5, wherein the condition relates to a length of time since a last data exchange between a mobile device and a base station.

7. The method of claim 1, further comprising:

evaluating information related to selecting a sleep mode; and

determining if a transition from a first sleep mode to another sleep mode is to be performed.

8. An electronic device configured to execute the method of claim 1.

9. A wireless communications apparatus, comprising:

a memory that retains instructions related to selecting a sleep mode based in part on a predefined sleep mode criteria; and

a processor, coupled to the memory, configured to execute the instructions retained in the memory.

10. The wireless communications apparatus of claim 9, wherein the predefined sleep mode criteria relates to at least one of a length of time since a data exchange between the wireless communications apparatus and a base station, a current sleep mode state, an available sleep mode state, an explicit signal to transition from the current sleep mode state to another sleep mode state, or a combination thereof.

11. The wireless communications apparatus of claim 9, wherein the memory further retains instructions related to a first sleep mode and at least one other sleep mode, the first sleep mode is one of a non-sleep mode, a light sleep mode, or a deep sleep mode, and the at least one other sleep mode is different from the first sleep mode and is one of a non-sleep mode, a light sleep mode, or a deep sleep mode.

12. The wireless communications apparatus of claim 9, wherein the memory retains instructions related to analyzing information related to selecting a sleep mode.

13. The wireless communications apparatus of claim 9, wherein the wireless communications apparatus is able to exchange at least one of data or control information, or a combination thereof, when in at least one of a light sleep mode or a non-sleep mode, and is able to exchange control information when in a deep sleep mode.

14. A wireless communications apparatus that facilitates selection of a sleep mode, comprising:

means for signaling to facilitate the selection of a sleep mode; and

means for selecting a sleep mode based in part on a predefined sleep mode criteria.

15. The wireless communications apparatus of claim 14, wherein the means for selecting a sleep mode further comprises transitioning from a first sleep mode to another sleep mode, the first sleep mode is one of a non-sleep mode, a light sleep mode, or a deep sleep mode, and the at least one other sleep mode is different from the first sleep mode and is one of a non-sleep mode, a light sleep mode, or a deep sleep mode.

16. The wireless communications apparatus of claim 14, wherein the predefined sleep mode criteria relates to at least one of an available sleep mode, a current sleep mode, a length of time since a last data exchange between a mobile device and a base station, or a direction to transition from a current sleep mode to a different sleep mode, or a combination thereof.

17. The wireless communications apparatus of claim 14, further comprising means for analyzing information related to selecting a sleep mode.

18. A machine-readable medium having stored thereon machine-executable instructions for:

signaling to facilitate a transition from a first sleep mode to another sleep mode; and

selecting a sleep mode based in part on a predefined sleep mode criteria.

19. The machine-readable medium of claim 18, the first sleep mode is one of a non- sleep mode, a light sleep mode, or a deep sleep mode, and the at least one other sleep mode is one of a non-sleep mode, a light sleep mode, or a deep sleep mode

20. The machine-readable medium of claim 18, the machine-executable instructions further comprise:

receiving signals related to transitioning from the first sleep mode to another sleep mode; and

transitioning from the first sleep mode to another sleep mode.

21. The machine-readable medium of claim 18, the predefined sleep mode criteria is based in part on at least one of an available sleep mode, a current sleep mode, a length of time since a last data exchange between a mobile device and a base station, or a direction to transition from a current sleep mode to a different sleep mode, or a combination thereof.

22. In a wireless communications system, an apparatus comprising:

a processor configured to;

signal to select a sleep mode when a condition is met based in part on a predefined sleep mode criteria; and

select a sleep mode based in part on the predefined sleep mode criteria.

23. The apparatus of claim 22, the signal is an implicit signal that is based in part on a length of time that has elapsed since a data exchange between the apparatus and another apparatus.

24. A method that facilitates sleep mode transitions associated with a mobile device, comprising:

evaluating information related to sleep mode transitions associated with the mobile device; and

transmitting a signal to facilitate a transition from a first sleep mode to another sleep mode based in part on a predefined sleep mode criteria.

25. The method of claim 24, further comprising:

determining if a transition from the first sleep mode to another sleep mode is to be performed based in part on the predefined sleep mode criteria.

26. The method of claim 24, the information related to sleep mode transitions includes information relating to a length of time that has elapsed since a data exchange occurred between the mobile device and a base station.

27. The method of claim 24, the signal is an explicit signal comprising a message that instructs the mobile device to transition from a first sleep mode to another sleep mode.

28. The method of claim 24, wherein the predefined sleep mode criteria relates to at least one of an available sleep mode, a current sleep mode, a length of time since a last data exchange between a mobile device and a base station, or a direction to transition from a current sleep mode to a different sleep mode, or a combination thereof.

29. A wireless communications apparatus, comprising:

a memory that retains instructions related to signaling associated with selecting a sleep mode, and selecting a sleep mode associated with a mobile device based in part on a predefined sleep mode criteria; and

a processor, coupled to the memory, configured to execute the instructions retained in the memory.

30. The wireless communications apparatus of claim 29, wherein the memory further retains instructions related to evaluating information related to selecting the sleep mode and determining a sleep mode to select, based in part on the predefined sleep mode criteria.

31. The wireless communications apparatus of claim 29, wherein the signaling is at least one of an explicit signal or an implicit signal, or a combination thereof, that indicates that a disparate sleep mode is to be selected.

32. The wireless communications apparatus of claim 29, wherein the memory further retains instructions related to scheduling data exchanges associated with the mobile device.

33. The wireless communications apparatus of claim 29, wherein the predefined sleep mode criteria is based in part on at least one of an available sleep mode, a current sleep mode, a length of time since a last data exchange between a mobile device and a base station, or a direction to transition from a current sleep mode to a different sleep mode, or a combination thereof.

34. A wireless communications apparatus that facilitates selection of a sleep mode associated with a mobile device in a wireless communication environment, comprising:

means for signaling to facilitate selecting a sleep mode; and

means for selecting a sleep mode based in part on a predefined sleep mode criteria.

35. The wireless communications apparatus of claim 34, further comprising means for scheduling data transmissions.

36. The wireless communications apparatus of claim 34, the predefined sleep mode criteria is based in part on at least one of an available sleep mode, a current sleep mode, a length of time since a last data exchange between a mobile device and a base station, or a direction to transition from a current sleep mode to a different sleep mode, or a combination thereof.

37. The wireless communications apparatus of claim 34, the sleep mode is at least one of a non-sleep mode, a light sleep mode, or a deep sleep mode.

38. The wireless communications apparatus of claim 37, the predefined sleep mode criteria comprises a first set of conditions associated with a transition between the non- sleep mode and the light sleep mode, and a disparate set of conditions associated with a transition between the light sleep mode and the deep sleep mode.

39. A machine-readable medium having stored thereon machine-executable instructions for:

evaluating information associated with transitioning to a particular sleep mode based in part on a predefined sleep mode criteria; and

signaling a transition to the particular sleep mode when a condition for transition associated with the predefined sleep mode criteria is met.

40. The machine-readable medium of claim 39, the predefined sleep mode criteria is based in part on at least one of an available sleep mode, a current sleep mode, a length of time since a last data exchange between a mobile device and a base station, or a direction to transition from a current sleep mode to a different sleep mode, or a combination thereof.

41. The machine-readable medium of claim 39, the machine-executable instructions further comprise tracking an amount of time that has elapsed since a data exchange associated with a mobile device.

42. In a wireless communications system, an apparatus comprising:

a processor configured to;

evaluate information associated with sleep mode transitions based in part on a sleep mode criteria;

select a sleep mode associated with a mobile device;

transmit at least one signal associated with a transition from a first sleep mode to a disparate sleep mode; and

schedule data exchanges associated with the mobile device.