Apparatus, system and method of power management in a wireless network
Some demonstrative embodiments include apparatuses, devices, systems and methods of power management in a wireless network. For example, a wireless station may be configured to transmit a first frame including a first Wakeup Schedule Element (WSE), the first WSE including a first beacon interval (BI) start time field value; to switch to a Power Save (PS) mode based on the first BI start time field value; and during the PS, transmit a second frame including a second WSE, the second WSE including a second BI start time field value, e.g., different from the first BI start time field value.
1. An apparatus comprising:
memory circuitry; and
a processor comprising logic and circuitry configured to cause a wireless communication station (STA) to:
set a Beacon Interval (BI) start time field comprising four octets in a wakeup schedule element by setting the BI start time field based on an indicated Target Beacon Transmission Time (TBTT), which is not more than a sum of (2 31 −1) microseconds and a TBTT of a BI during which the wakeup schedule element is to be transmitted; and
transmit a frame comprising the wakeup schedule element during the BI.
2. The apparatus of claim 1 configured to cause the STA to switch to a Power Save (PS) mode based on the BI start time field, and, when at the PS mode, to switch between awake BIs and doze BIs according to a cycle based on the wakeup schedule element.
3. The apparatus of claim 1 configured to cause the STA to set a sleep cycle field in the wakeup schedule element to indicate a sleep cycle duration in beacon intervals.
4. The apparatus of claim 3 configured to cause the STA to set the sleep cycle field based on a sum of awake BIs and doze BIs that make up the sleep cycle.
5. The apparatus of claim 1 configured to cause the STA to set a number of awake BIs field in the wakeup schedule element to indicate a number of awake BIs at a beginning of each sleep cycle.
6. The apparatus of claim 1 configured to cause the STA to set a number of awake BIs field in the wakeup schedule element to a value of zero to indicate that no awake BIs are to be included in a sleep cycle.
7. The apparatus of claim 1 configured to cause the STA to set the BI start time field to indicate lower order 4 octets of a Timing Synchronization Function (TSF) timer.
8. The apparatus of claim 1 configured to cause the STA to set the BI start time field to indicate a first awake BI in a sleep cycle.
9. The apparatus of claim 1 configured to cause the STA to transmit the frame as a non Access Point (AP)/non Personal Basic Service Set Control Point (PCP) (non-AP/non-PCP) STA, the frame comprising a Power Save Configuration Request frame.
10. The apparatus of claim 1 configured to cause the STA to transmit the frame as a Personal Basic Service Set (PBSS) Control Point (PCP) STA, the frame comprising a beacon frame or an announce frame.
11. The apparatus of claim 1 comprising a radio to transmit the frame.
12. The apparatus of claim 11 comprising one or more antennas connected to the radio, a memory to store data processed by the STA, and another processor to execute instructions of an operating system.
13. A product comprising one or more tangible computer-readable non-transitory storage media comprising computer-executable instructions operable to, when executed by at least one processor, enable the at least one processor to cause a wireless communication station (STA) to:
set a Beacon Interval (BI) start time field comprising four octets in a wakeup schedule element by setting the BI start time field based on an indicated Target Beacon Transmission Time (TBTT), which is not more than a sum of (2 31 −1) microseconds and a TBTT of a BI during which the wakeup schedule element is to be transmitted; and
transmit a frame comprising the wakeup schedule element during the BI.
14. The product of claim 13 , wherein the instructions, when executed, cause the STA to switch to a Power Save (PS) mode based on the BI start time field, and, when at the PS mode, to switch between awake BIs and doze BIs according to a cycle based on the wakeup schedule element.
15. The product of claim 13 , wherein the instructions, when executed, cause the STA to set a sleep cycle field in the wakeup schedule element to indicate a sleep cycle duration in beacon intervals.
16. The product of claim 13 , wherein the instructions, when executed, cause the STA to set a number of awake BIs field in the wakeup schedule element to indicate a number of awake BIs at a beginning of each sleep cycle.
17. The product of claim 13 , wherein the instructions, when executed, cause the STA to set a number of awake BIs field in the wakeup schedule element to a value of zero to indicate that no awake BIs are to be included in a sleep cycle.
18. The product of claim 13 , wherein the instructions, when executed, cause the STA to set the BI start time field to indicate lower order 4 octets of a Timing Synchronization Function (TSF) timer.
19. The product of claim 13 , wherein the instructions, when executed, cause the STA to set the BI start time field to indicate a first awake BI in a sleep cycle.
20. The product of claim 13 , wherein the instructions, when executed, cause the STA to transmit the frame as a non Access Point (AP)/non Personal Basic Service Set Control Point (PCP) (non-AP/non-PCP) STA, the frame comprising a Power Save Configuration Request frame.
21. The product of claim 13 , wherein the instructions, when executed, cause the STA to transmit the frame as a Personal Basic Service Set (PBSS) Control Point (PCP) STA, the frame comprising a beacon frame or an announce frame.
22. An apparatus comprising:
means for causing a wireless communication station (STA) to set a Beacon Interval (BI) start time field comprising four octets in a wakeup schedule element by setting the BI start time field based on an indicated Target Beacon Transmission Time (TBTT), which is not more than a sum of (2 31 −1) microseconds and a TBTT of a BI during which the wakeup schedule element is to be transmitted; and
means for causing the STA to transmit a frame comprising the wakeup schedule element during the BI.
23. The apparatus of claim 22 comprising means for switching the STA to a Power Save (PS) mode based on the BI start time field, and, when at the PS mode, switching the STA between awake BIs and doze BIs according to a cycle based on the wakeup schedule element.