Apparatus, system and method of beam tracking
Some demonstrative embodiments include apparatuses, devices, systems and methods of beamforming. For example, a responder station may process a received Beam Refinement Protocol (BRP) request including a beam tracking request from an initiator station; and select whether or not to transmit a BRP response including beam tracking feedback, in response to the BRP request, based on a comparison between a time period and a BRP tracking time limit, the time period being based on a timing of the BRP request and a timing of the BRP response.
1. An apparatus comprising:
memory circuitry; and
a processor comprising logic and circuitry configured to cause a beam tracking responder wireless communication station (STA) to:
determine a beam tracking time limit based on a first time limit value and a second time limit value, the first time limit value comprising a value in a beam tracking time limit field from a beam tracking initiator STA, the second time limit value corresponding to the beam tracking responder STA;
process a Physical layer (PHY) Protocol Data Unit (PPDU) from the beam tracking initiator STA, the PPDU comprising a beam tracking request; and
based on a comparison between a time period and the beam tracking time limit, select whether to allow the beam tracking responder STA to transmit a Beam Refinement Protocol (BRP) frame comprising feedback to the beam tracking initiator STA, the time period is between a first time and a second time, the first time corresponding to the PPDU and the second time corresponding to the BRP frame.
2. The apparatus of claim 1 configured to prohibit the beam tracking responder STA to transmit the BRP frame, based on a determination that the time period is longer than the beam tracking time limit.
3. The apparatus of claim 1 configured to allow the beam tracking responder STA to transmit the BRP frame, based on a determination that the time period is no longer than the beam tracking time limit.
4. The apparatus of claim 1 , wherein the time period is between a PHY Receive (Rx) end indication (PHY-RXEND.indication) primitive of the PPDU and a PHY Transmit (Tx) end confirm (PHY-TXEND.confirm) primitive of the BRP frame.
5. The apparatus of claim 1 configured to cause the beam tracking responder STA to determine the beam tracking time limit based on a comparison between the first time limit value and the second time limit value.
6. The apparatus of claim 1 configured to cause the beam tracking responder STA to determine the beam tracking time limit according to the first time limit value, based on a determination that the first time limit value is greater than 0 and less than 65535, the second time limit value is greater than 0 and less than 65535, and the first time limit value is equal to or greater than the second time limit value.
7. The apparatus of claim 1 configured to cause the beam tracking responder STA to determine the beam tracking time limit according to the second time limit value, based on a determination that the first time limit value is greater than 0 and less than 65535, the second time limit value is greater than 0 and less than 65535, and the second time limit value is greater than the first time limit value.
8. The apparatus of claim 1 configured to cause the beam tracking responder STA to determine the beam tracking time limit according to the first time limit value, based on a determination that the first time limit value is greater than 0 and less than 65535, and the second time limit value is 65535.
9. The apparatus of claim 1 configured to cause the beam tracking responder STA to determine the beam tracking time limit according to the second time limit value, based on a determination that the first time limit value is 65535, and the second time limit value is greater than 0 and less than 65535.
10. The apparatus of claim 1 configured to cause the beam tracking responder STA to determine the beam tracking time limit according to a default time limit value, based on a determination that the first time limit value is 65535 and the second time limit value is 65535.
11. The apparatus of claim 1 , wherein the beam tracking time limit field is in a Directional Multi-Gigabit (DMG) capabilities element from the beam tracking initiator STA.
12. The apparatus of claim 1 , wherein the beam tracking time limit field has a size of two octets.
13. The apparatus of claim 1 , wherein the beam tracking responder STA comprises a Directional Multi-Gigabit (DMG) STA.
14. The apparatus of claim 1 comprising a radio, the processor configured to cause the radio to transmit the BRP frame.
15. The apparatus of claim 14 comprising one or more antennas connected to the radio, and another processor to execute instructions of an operating system.
16. 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 beam tracking responder wireless communication station (STA) to:
determine a beam tracking time limit based on a first time limit value and a second time limit value, the first time limit value comprising a value in a beam tracking time limit field from a beam tracking initiator STA, the second time limit value corresponding to the beam tracking responder STA;
process a Physical layer (PHY) Protocol Data Unit (PPDU) from the beam tracking initiator STA, the PPDU comprising a beam tracking request; and
based on a comparison between a time period and the beam tracking time limit, select whether to allow the beam tracking responder STA to transmit a Beam Refinement Protocol (BRP) frame comprising feedback to the beam tracking initiator STA, the time period is between a first time and a second time, the first time corresponding to the PPDU and the second time corresponding to the BRP frame.
17. The product of claim 16 , wherein the instructions, when executed, prohibit the beam tracking responder STA to transmit the BRP frame, based on a determination that the time period is longer than the beam tracking time limit.
18. The product of claim 16 , wherein the instructions, when executed, allow the beam tracking responder STA to transmit the BRP frame, based on a determination that the time period is no longer than the beam tracking time limit.
19. The product of claim 16 , wherein the time period is between a PHY Receive (Rx) end indication (PHY-RXEND.indication) primitive of the PPDU and a PHY Transmit (Tx) end confirm (PHY-TXEND.confirm) primitive of the BRP frame.
20. An apparatus for a beam tracking responder wireless communication station (STA), the apparatus comprising:
means for determining a beam tracking time limit based on a first time limit value and a second time limit value, the first time limit value comprising a value in a beam tracking time limit field from a beam tracking initiator STA, the second time limit value corresponding to the beam tracking responder STA;
means for processing a Physical layer (PHY) Protocol Data Unit (PPDU) from the beam tracking initiator STA, the PPDU comprising a beam tracking request; and
means for selecting, based on a comparison between a time period and the beam tracking time limit, whether to allow the beam tracking responder STA to transmit a Beam Refinement Protocol (BRP) frame comprising feedback to the beam tracking initiator STA, the time period is between a first time and a second time, the first time corresponding to the PPDU and the second time corresponding to the BRP frame.
21. The apparatus of claim 20 , wherein the time period is between a PHY Receive (Rx) end indication (PHY-RXEND.indication) primitive of the PPDU and a PHY Transmit (Tx) end confirm (PHY-TXEND.confirm) primitive of the BRP frame.