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1. (WO2017156366) MULTI-RESOLUTION BEAM TRAINING IN MMW WLAN SYSTEMS
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What is Claimed:

1. A method of multiresolution beam refinement for multiple beans transmitted between a wireless access point and a plurality of wireless stations, comprising:

performing, in the wireless access point, a wireless access point initiator transmitter sector sweep between the wireless access point and at least one of the plurality of wireless stations;

performing, in the wireless access point, a receiver sector sweep for the at least one of the plurality of wireless stations and the wireless access point;

determining beam sectors for a first resolution between the access point transmitter and at least one of the plurality of wireless stations receiver;

determining beams within the determined beam sectors for the first resolution based on the AWV for each beam within the determined beam sectors;

determining a first resolution best beam for each determined sector for the first resolution;

determining beam sectors for a second resolution between the access point transmitter and at least one of the plurality of wireless stations receiver;

determining beams within the determined beam sectors for the second resolution based on the AWV for each beam within the determined beam sectors;

determining a second resolution best beam for each determined sector for the second resolution; and

determining a best beam by comparing the first resolution best beam with the second resolution best beam.

2. The method of claim 1, further comprising sending a transmit beam refinement protocol frame with TRN-T subfields, from the wireless access point, to the at least one of the plurality of wireless stations.

3. The method of claim 2, further comprising receiving a best antenna weight vector (AWV), at the wireless access point, from the at least one of the plurality of wireless stations.

4. The method of claim 3, receiving a best sector, at the wireless access point, from the at least one of the plurality of wireless stations that was determined from the transmitter and receiver sector sweeps.

5. The method of claim 1, wherein the AWV for each beam sector is predefined.

6. The method of claim 1, wherein the wireless access point determines beam sectors for a first resolution from a wireless station group identification received from the at least one of the plurality of wireless stations.

7. The method of claim 1, further comprising the wireless access point requesting, from the at least one of the plurality of wireless stations, for the first resolution, a wireless group identification and an associated sector.

8. The method of claim 7, wherein determining beam sectors for the first resolution based on the AWV for each beam within the determined beam sectors further comprises using the received wireless station group identification and associated sector.

9. The method of claim 1, wherein the wireless access point determines beam sectors for a first resolution from a wireless station group identification and a beam refinement protocol feedback frame received from the at least one of the plurality of wireless stations.

10. The method of claim 1, wherein the first and the second resolutions are performed for time division multiplexing and frequency division multiplexing communications between the access point and the at least one of the plurality of wireless stations.

11. A wireless access point for communicating with a plurality of wireless stations using a multiresolution beam refinement for multiple beans transmitted between a wireless access point and a plurality of wireless stations, comprising:

a processor configured to

perform, in the wireless access point, a wireless access point initiator transmitter sector sweep between the wireless access point and at least one of the plurality of wireless stations;

perform, in the wireless access point, a receiver sector sweep for the at least one of the plurality of wireless stations and the wireless access point;

determine beam sectors for a first resolution between the access point transmitter and at least one of the plurality of wireless stations receiver;

determine beams within the determined beam sectors for the first resolution based on the AWV for each beam within the determined beam sectors;

determine a first resolution best beam for each determined sector for the first resolution;

determine beam sectors for a second resolution between the access point transmitter and at least one of the plurality of wireless stations receiver;

determine beams within the determined beam sectors for the second resolution based on the AWV for each beam within the determined beam sectors;

determine a second resolution best beam for each determined sector for the second resolution; and

determine a best beam by comparing the first resolution best beam with the second resolution best beam.

12. The wireless access point of claim 11, wherein the processor is further configured to send a transmit beam refinement protocol frame with TRN-T subfields, from the wireless access point, to the at least one of the plurality of wireless stations.

13. The wireless access point of claim 12, wherein the processor is further configured to receive a best antenna weight vector (AWV), at the wireless access point, from the at least one of the plurality of wireless stations that was determined from the transmitter and receiver sector sweeps.

14. The wireless access point of claim 11 , wherein the processor is further configured to determine beam sectors for a first resolution from a wireless station group identification received from the at least one of the plurality of wireless stations.

15. The wireless access point of claim 11, wherein the processor is further configured to request, from the at least one of the plurality of wireless stations, for the first resolution, a wireless group identification and an associated sector.

16. The wireless access point of claim 15, wherein the processor is further configured to determine beam sectors for the first resolution based on the AWV for each beam within the determined beam sectors further comprises using the received wireless station group identification and associated sector.

17. The wireless access point of claim 11, wherein the processor is further configured to determine beam sectors for a first resolution from a wireless station group identification and a beam refinement protocol feedback frame received from the at least one of the plurality of wireless stations.

18. The wireless access point of claim 11 , wherein the first and the second resolutions are performed for time division multiplexing and frequency division multiplexing communications between the access point and the at least one of the plurality of wireless stations.

19. An access point for communicating with a multi-resolution beam refinement protocol (BRP), comprising:

a processor configured to:

determine a transmit sector and a receive sector using a sector level sweep;

send a first beam refinement protocol (BRP) comprising a first plurality of transmit refinement transaction (TRN-T) subfields, that are associated with at least one of the transmit sector and the receive sector and a subset of available transmit beams;

receive a first feedback from a station that indicates a first best transmit beam from the first plurality of TRN-T subfields;

down-select beams associated with the transmit sector for a second beam refinement protocol;

send the second beam refinement protocol with a second plurality of TRN-T subfields based on the first best transmit beam; and

receive a second feedback from the station that indicates a second best transmit beam based on the second beam refinement protocol.

20. A method of communicating with an access point using a multi-resolution beam refinement protocol (BRP), comprising

determining a transmit sector and a receive sector using a sector level sweep; sending a first beam refinement protocol (BRP) comprising a first plurality of transmit refinement transaction (TRN-T) subfields, that are associated with at least one of the transmit sector and the receive sector and a subset of available transmit beams;

receiving a first feedback from a station that indicates a first best transmit beam from the first plurality of TRN-T subfields;

down-selecting beams associated with the transmit sector for a second beam refinement protocol;

sending the second beam refinement protocol with a second plurality of TRN-T subfields based on the first best transmit beam; and

receiving a second feedback from the station that indicates a second best transmit beam based on the second beam refinement protocol.