Application-aware radio power saving

• US 8,989,096 B2
• Filed: 12/11/2012
• Issued: 03/24/2015
• Est. Priority Date: 10/15/2012
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Apple Inc.
• Inventors: Chhabra, Kapil, Thomas, Tito, Vyas, Amit K.
• Primary Examiner(s): CRUTCHFIELD, CHRISTOPHER M
• Application Number:
  US13/711,473
• Publication Number:
  US 20140105084A1
• Time in Patent Office: 833 Days
• Field of Search: None
• US Class Current: 370/328
• CPC Class Codes: H04W 52/0209 in terminal devices terminal devices per se H04W88/02
• CPC Class Codes: H04W 52/0251 using monitoring of local events, e.g. events related to user activity
• CPC Class Codes: H04W 52/0254 detecting a user operation or a tactile contact or a motion of the device
• CPC Class Codes: H04W 52/0258 controlling an operation mode according to history or models of usage information, e.g. activity schedule or time of day
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

In order to facilitate reduced power consumption of an electronic device (such as a smartphone) when communicating with another electronic device (such as an access point) in a wireless network, the electronic device may change a wake policy based on the applications executing on the electronic device. In particular, the electronic device may monitor a subset of the applications currently executed by a processor in the electronic device, where the subset can include zero or more of the applications. Based on the subset, the wake policy of an interface circuit in the electronic device may be changed. This wake policy may specify a frequency of wake ups to receive information from the other electronic device and/or monitoring of unicast or multicast bits in a Traffic Indication Map element. In this way, the time that the electronic device is in the active mode can be reduced, thereby reducing power consumption.

Claims

1. An electronic device, comprising:

an antenna;

an interface circuit, coupled to the antenna, configured to communicate with another electronic device using a connection in the wireless network;

a processor; and

memory, wherein the memory stores applications and a program module, wherein the applications are configured to be executed by the processor, and wherein the program module is configured to be executed by the processor to select a wake policy of the electronic device, the program module including;

instructions for monitoring a subset of the applications currently executed by the processor, wherein the subset can include zero or more of the applications; and

instructions for selecting the wake policy of the interface circuit based on the subset, wherein, when the subset includes an application that uses multicast/broadcast data and unicast data,

the wake policy specifies a first wake period wherein, when the subset includes one or more applications that only use unicast data, the wake policy specifies a second wake-time period that is different than the first wake-time period.

2. The electronic device of claim 1, wherein, when the subset includes one or more applications that only use unicast data, the wake policy further specifies a second wake-time period that is larger than the first wake-time period.

3. The electronic device of claim 2, wherein the one or more applications use push notifications.

4. The electronic device of claim 2, wherein, if the subset includes zero applications, the wake policy specifies a third wake-time period that is larger than the second wake-time period.

5. The electronic device of claim 4, wherein the third wake-time period facilitates improved responsiveness of the electronic device when a user of the electronic device initiates a transition from the sleep mode to the active mode.

6. The electronic device of claim 1, wherein the wake policy is based on whether the subset includes zero or more applications that use at item selected from the group consisting of:

multicast/broadcast data and unicast data, unicast data, and neither of multicast/broadcast data and unicast data.

7. The electronic device of claim 1, wherein the other electronic device includes an access point in the wireless network.

8. The electronic device of claim 1, wherein the wake policy specifies an item in the group consisting of:

how often the interface circuit transitions from a sleep mode to an active mode to receive information from the other electronic device, monitoring of a unicast bit in a Traffic Indication Map (TIM) element, and monitoring of a multicast bit in the TIM element; and

wherein power consumption in the sleep mode is lower than in the active mode.

9. A computer-program product for use in conjunction with an electronic device, the computer-program product comprising a non-transitory computer-readable storage medium and a computer-program mechanism embedded therein, to select a wake policy of an electronic device, the computer-program mechanism including:

instructions for monitoring a subset of applications currently executed by a processor in the electronic device, wherein the subset can include zero or more of applications; and

instructions for selecting the wake policy of an interface circuit in the electronic device based on the subset, wherein, when the subset includes an application that uses multicast/broadcast data and unicast data,

the wake policy specifies a first wake period wherein, when the subset includes one or more applications that only use unicast data, the wake policy specifies a second wake-time period that is different than the first wake-time period.

10. The computer-program product of claim 9, wherein, when the subset includes one or more applications that only use unicast data, the wake policy further specifies a second wake-time period that is larger than the first wake-time period.

11. The computer-program product of claim 10, wherein the one or more applications use push notifications.

12. The computer-program product of claim 10, wherein, if the subset includes zero applications, the wake policy specifies a third wake-time period that is larger than the second wake-time period.

13. The computer-program product of claim 12, wherein the third wake-time period facilitates improved responsiveness of the electronic device when a user of the electronic device initiates a transition from the sleep mode to the active mode.

14. The computer-program product of claim 9, wherein the wake policy is based on whether the subset includes zero or more applications that use at item selected from the group consisting of:

multicast/broadcast data and unicast data, unicast data, and neither of multicast/broadcast data and unicast data.

15. The computer-program product of claim 9, wherein the other electronic device includes an access point in the wireless network.

16. The computer-program product of claim 9, wherein the wake policy specifies an item in the group consisting of:

how often the interface circuit transitions from a sleep mode to an active mode to receive information from the other electronic device, monitoring of a unicast bit in a Traffic Indication Map (TIM) element, and monitoring of a multicast bit in the TIM element; and

wherein power consumption in the sleep mode is lower than in the active mode.

17. A method for selecting a wake policy of an electronic device, wherein the method comprises:

monitoring a subset of applications currently executed by a processor in the electronic device, wherein the subset can include zero or more of applications; and

selecting the wake policy of an interface circuit in the electronic device based on the subset, wherein, when the subset includes an application that uses multicast/broadcast data and unicast data,

the wake policy specifies a first wake period wherein, when the subset includes one or more applications that only use unicast data, the wake policy specifies a second wake-time period that is different than the first wake-time period.

18. The method of claim 17, wherein the wake policy is based on whether the subset includes zero or more applications that use at item selected from the group consisting of:

multicast/broadcast data and unicast data, unicast data, and neither of multicast/broadcast data and unicast data.