Power Management for Wireless Networks

• US 20160021615A1
• Filed: 09/26/2015
• Published: 01/21/2016
• Est. Priority Date: 12/19/2008
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Gong, Xiaohong, Walker, Jesse
• Granted Patent: US 9,913,219 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 1/3209 Monitoring remote activity, e.g. over telephone lines or network connections
• CPC Class Codes: G06F 1/3228 Monitoring task completion, e.g. by use of idle timers, stop commands or wait commands
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0235 where the received signal is a power saving command
• CPC Class Codes: H04W 76/14 Direct-mode setup
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Embodiments provide techniques for device power management in wireless networks. For instance, an apparatus may include a power management module, and a transceiver module. The power management module determines a beacon interval and a wakeup interval. The transceiver module to send a transmission to one or more remote devices that includes the beacon interval and the wakeup interval. The beacon interval indicates a time interval between consecutive beacon transmissions of the apparatus, and the wakeup interval indicates a time interval between when the apparatus receives two consecutive beacons from a peer device.

Claims

1. At least one non-transitory computer-readable storage medium comprising a set of instructions that, in response to being executed at a processing platform for a wireless communication device, cause the processing platform to:

identify a received first beacon indicating a beacon interval of a peer mesh point (MP);

demodulate an awake window information element (IE) comprised in the first beacon;

based on a determination of an awake window of the peer MP, exchange one or more communications with the peer MP while the peer MP is in an awake state, the awake window of the peer MP to be determined based on the awake window IE; and

exit a doze state to receive a second beacon of the peer MP, the doze state to be exited at a time to be determined based on the beacon interval of the peer MP.

2. The at least one non-transitory computer-readable storage medium of claim 1, the time to exit the doze state to be determined based on the beacon interval of the peer MP and a wakeup interval for receiving beacons of the peer MP.

3. The at least one non-transitory computer-readable storage medium of claim 2, the wakeup interval to comprise a per-peer-link based wakeup interval for a peer link with the peer MP.

4. The at least one non-transitory computer-readable storage medium of claim 2, the wakeup interval to comprise a same duration as the beacon interval of the peer MP.

5. The at least one non-transitory computer-readable storage medium of claim 2, a duration of the wakeup interval to comprise a multiple of a duration of the beacon interval of the peer MP.

6. The at least one non-transitory computer-readable storage medium of claim 1, comprising instructions that, in response to being executed at the processing platform, cause the processing platform to:

send a trigger frame to initiate a service period for receiving one or more buffered frames during the awake window of the peer MP in response to a determination that the peer MP has buffered traffic for the wireless communication device, the determination to be based on a traffic indication map (TIM) comprised in the first beacon.

7. The at least one non-transitory computer-readable storage medium of claim 1, the first beacon to comprise a delivery traffic indication map (DTIM) beacon.

8. The at least one non-transitory computer-readable storage medium of claim 1, the awake window IE to comprise an awake window field to indicate a duration of the awake window.

9. The at least one non-transitory computer-readable storage medium of claim 8, the awake window IE to comprise a size of 4 octets, the awake window field to comprise a size of 2 octets, the awake window IE to comprise an identifier (ID) field comprising a size of 1 octet and a length field comprising a size of 1 octet.

10. An apparatus, comprising:

logic, at least a portion of which is in hardware, the logic to;

identify a received first beacon indicating a beacon interval of a peer mesh point (MP);

demodulate an awake window information element (IE) comprised in the first beacon;

based on a determination of an awake window of the peer MP, exchange one or more communications with the peer MP while the peer MP is in an awake state, the awake window of the peer MP to be determined based on the awake window IE; and

exit a doze state to receive a second beacon of the peer MP, the doze state to be exited at a time to be determined based on the beacon interval of the peer MP.

11. The apparatus of claim 10, the time to exit the doze state to be determined based on the beacon interval of the peer MP and a wakeup interval for receiving beacons of the peer MP.

12. The apparatus of claim 11, the wakeup interval to comprise a per-peer-link based wakeup interval for a peer link with the peer MP.

13. The apparatus of claim 11, the wakeup interval to comprise a same duration as the beacon interval of the peer MP.

14. The apparatus of claim 11, a duration of the wakeup interval to comprise a multiple of a duration of the beacon interval of the peer MP.

15. The apparatus of claim 10, the logic to send a trigger frame to initiate a service period for receiving one or more buffered frames during the awake window of the peer MP in response to a determination that the peer MP has buffered traffic for the apparatus, the determination to be based on a traffic indication map (TIM) comprised in the first beacon.

16. The apparatus of claim 10, the first beacon to comprise a delivery traffic indication map (DTIM) beacon.

17. The apparatus of claim 10, the awake window IE to comprise an awake window field to indicate a duration of the awake window.

18. The apparatus of claim 17, the awake window IE to comprise the awake window field, an identifier (ID) field, and a length field.

19. The apparatus of claim 18, the awake window IE to comprise a size of 4 octets, the awake window field to comprise a size of 2 octets, the ID field to comprise a size of 1 octet, the length field to comprise a size of 1 octet.

20. The apparatus of claim 10, comprising at least one radio frequency (RF) transceiver.

21. The apparatus of claim 20, comprising:

at least one processor; and

at least one memory.

22. The apparatus of claim 21, comprising at least one RF antenna.