CLAIMS
What is claimed is:
1. An apparatus comprising circuitry and logic configured to cause a wireless station to:
transmit a short feedback trigger frame comprising a first allocation of opportunities for
short feedback from associated stations, and a second allocation of opportunities for short feedback from unassociated stations;
process a plurality of short feedbacks from a plurality of stations according to the first and second allocations, the plurality of short feedbacks to indicate uplink resource requests;
based on the plurality of short feedbacks, transmit a Multi-User (MU) trigger frame to allocate uplink resources to the plurality of stations; and
process a plurality of uplink transmissions from the plurality of stations according to the uplink resources.
2. The apparatus of claim 1 configured to cause the wireless station to determine an unassociated identifier (UID) corresponding to an unassociated station from which a short feedback is received at an opportunity of the second allocation of opportunities, the MU trigger frame comprising the UID to identify the unassociated station.
3. The apparatus of claim 2 configured to cause the wireless station to determine the UID corresponding to the unassociated station based on the opportunity at which the short feedback is received from the unassociated station.
4. The apparatus of claim 2, wherein the short feedback trigger frame, the plurality of short feedbacks, the MU trigger frame, and the plurality of uplink transmissions are within a same Transmit Opportunity (TxOP), the UID to expire at an end of the TxOP.
5. The apparatus of claim 2 configured to cause the wireless station to transmit a MU block acknowledge (BA) to acknowledge receipt of the plurality of uplink transmissions, said MU BA comprising an indication of an expiration time period after which said UID is to expire.
6. The apparatus of claim 1, wherein the plurality of short feedbacks comprise a short feedback from an associated station, the MU trigger frame comprising an Association Identifier (AID) of the associated station.
7. The apparatus of claim 1, wherein the short feedback trigger frame comprises a polling type indication to indicate polling for a positioning measurement, the plurality of uplink transmissions comprising a plurality of positioning measurement requests.

8. The apparatus of claim 7 configured to cause the wireless station to perform a plurality of positioning measurement sequences with the plurality of stations based on the plurality of positioning measurement requests.
9. The apparatus of claim 7, wherein the plurality of uplink transmissions comprises Fine Timing Measurement (FTM) requests.
10. The apparatus of claim 1 configured to cause the wireless station to transmit a MU block acknowledge (BA) to acknowledge receipt of the plurality of uplink transmissions.
11. The apparatus of claim 10, wherein the MU trigger frame is to allocate an uplink resource based on a short feedback received at an opportunity of the second allocation of opportunities, the MU BA comprises a Media Access Control (MAC) address of an unassociated station from which an uplink transmission is received over the uplink resource.
12. The apparatus of any one of claims 1-11, wherein the short feedback trigger frame comprises an indication of a timing of one or more subsequent short feedback trigger frames.
13. The apparatus of any one of claims 1-11, wherein the first allocation of opportunities comprises an allocation of non-contention-based opportunities allocated to one or more associated stations.
14. The apparatus of any one of claims 1-11, wherein the second allocation of opportunities comprises an allocation of contention-based opportunities.
15. The apparatus of any one of claims 1-11, wherein the short feedback trigger frame, the plurality of short feedbacks, the MU trigger frame, and the plurality of uplink transmissions are within a same Transmit Opportunity (TxOP).
16. The apparatus of any one of claims 1-11 comprising a radio, one or more antennas, a memory and a processor.
17. A method to be performed at a wireless station, the method comprising:
transmitting a short feedback trigger frame comprising a first allocation of opportunities
for short feedback from associated stations, and a second allocation of opportunities for short feedback from unassociated stations;
processing a plurality of short feedbacks from a plurality of stations according to the first and second allocations, the plurality of short feedbacks to indicate uplink resource requests;

based on the plurality of short feedbacks, transmitting a Multi-User (MU) trigger frame to allocate uplink resources to the plurality of stations; and
processing a plurality of uplink transmissions from the plurality of stations according to the uplink resources.
18. The method of claim 17, wherein the short feedback trigger frame comprises a polling type indication to indicate polling for a positioning measurement, the plurality of uplink transmissions comprising a plurality of positioning measurement requests.
19. 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 computer processor, enable the at least one computer processor to cause a wireless station to perform the method of claim 17 or 18.
20. A system of wireless communication comprising an apparatus, the apparatus comprising circuitry and logic configured to cause a first wireless station to:
process a short feedback trigger frame from a second wireless station, the short feedback trigger frame comprising a first allocation of opportunities for short feedback from associated stations, and a second allocation of opportunities for short feedback from unassociated stations;
transmit a short feedback at an opportunity of the first allocation of opportunities, when the first wireless station is associated with the second wireless station, or at an opportunity of the second allocation of opportunities, when the first wireless station is unassociated with the second wireless station;
process a Multi-User (MU) trigger frame from the second wireless station to allocate uplink resources to a plurality of stations comprising the first wireless station; and
transmit an uplink transmission to the second wireless station according to the uplink resources allocated by the MU trigger frame.
21. The system of claim 20, wherein the MU trigger frame comprises an unassociated identifier (UID) to identify the first wireless station, when the first wireless station is unassociated with the second wireless station.
22. The system of claim 20, wherein the short feedback trigger frame comprises a polling type indication to indicate polling for a positioning measurement, the uplink transmission comprising a positioning measurement request.

23. The system of any one of claims 20-22, wherein the short feedback trigger frame, the short feedback, the MU trigger frame, and the uplink transmission are within a same Transmit Opportunity (TxOP).
24. A product including one or more tangible computer-readable non-transitory storage media comprising computer-executable instructions operable to, when executed by at least one computer processor, enable the at least one computer processor to cause a first wireless station to:
process a short feedback trigger frame from a second wireless station, the short feedback trigger frame comprising a first allocation of opportunities for short feedback from associated stations, and a second allocation of opportunities for short feedback from unassociated stations;
transmit a short feedback at an opportunity of the first allocation of opportunities, when the first wireless station is associated with the second wireless station, or at an opportunity of the second allocation of opportunities, when the first wireless station is unassociated with the second wireless station;
process a Multi-User (MU) trigger frame from the second wireless station to allocate uplink resources to a plurality of stations comprising the first wireless station; and
transmit an uplink transmission to the second wireless station according to the uplink resources allocated by the MU trigger frame.
25. The product of claim 24, wherein the short feedback trigger frame comprises a polling
type indication to indicate polling for a positioning measurement, the uplink transmission
comprising a positioning measurement request.